Green Turtles Return To Nest In Mpunguti Island After Seven Years!
Category: Kisite Mpunguti MPA, Turtles, mpunguti island | Date: Oct 21 2009 | By: gvikenya
Around 2000 years ago, trade in sea turtle products was observed in the Red Sea and East Africa region and although trade in ambergris and ivory occurred, tortoise and turtle shell was the most commonly mentioned product. (Jack Frazier, Proceedings of the Western Indian Ocean Marine Turtle Conservation Workshop, Mombasa, 2005). All five species of Indian Ocean sea turtles are considered to be endangered and can be found in Kenya. Green turtles (Chelonia mydas) are reported to nest throughout the coastline but although there are some green turtle nests confirmed in the nearby area of Funzi Island, sea turtles haven’t laid their eggs in the KMMPA (Kisite-Mpunguti Marine Protected Area) for at least seven years.
So it was with great joy that last week GVI Kenya heard the good news about a green turtle visiting the white sandy beach located in the Lower Mpunguti Island. Lily, from Coral Spirit Restaurant, located in Wasini village, shared with us the pictures she took while she was visiting the island.
Green turtle arriving in Lower Mpunguti Island in September 2009 (photo by Lili Angel).
This is an amazing happening in this Marine Protected Area, and will hopefully contribute to the conservation efforts GVI and its major local partner KWS (Kenya Wildlife Service) are putting in place in the area. The islands of Mpunguti are known to support an important population of coconut crabs, nesting sites to African fish eagles, and its surrounding waters are frequently visited by Bottlenose and Humpback dolphins, as well as Hawksbill and Green turtles that feed on sea grass and algae. Both local fishermen and KWS rangers still recall the days when the turtles came to lay eggs on the Lower Mpunguti Island, the only sandy beach available for setting up the nest. It has been almost seven or eight years since the last turtle arrived on the Lower Mpunguti Island.
Female Green Turtle preparing the nesting site, throwing sand with her flippers (photo by Lili Angel).
Green turtle leaving the beach, returning to the sea (photo by Lili Angel).
Green turtles typically live about 45 to 59 years. Given that a female nests in six or seven of those years and lays about 330 eggs each nesting season, she will produce 1900-2300 eggs in her lifetime. Factoring in natural predation, fungus infection of nests, and other embryo failure rates, one can expect each healthy female to produce 1000-1900 hatchlings (Spotila, James R. Sea Turtles, 2004). This information emphasises the importance of a single nest in this region. Although this turtle did not lay its eggs, she might go back to the nesting place or other turtles might look for this place as an option to nest. The next crucial step in this process is to take management actions in order to protect the nesting area and recognize it as a non-disturbance place.
Nesting site attempt (photo by Lili Angel)
The historic decline of green turtles is one of the most cited and best documented conservation issues. Its population has declined 50-70% since the 1900’s and they are recognized internationally as endangered by the World Conservation Union (IUCN) and are protected in the Appendix I of the Conventional on International Trade in Endangered Species (CITES) and in Appendix I and II of the Convention Migratory Species (CMS).
The Kenya Sea Turtle Conservation Committee (KESCOM) was established to complement government commitment to addressing global concerns for marine turtle population decline. GVI works closely with KESCOM in sea turtle conservation efforts, through research, education and capacity building activities such as training in biology and ecology of sea turtles. The data and the pictures collected in our study area (KMMPA) are shared with this organization in order to recognize and protect important foraging, mating and nesting areas for sea turtles. The ultimate goal is to restore green turtles to population levels at which they can fulfil the ecological roles they performed in the past.
Ines Gomez
Tags: , African Fish Eagle, algae, ambergris, biology, bottlenose dolphin, capacity building, coconut crab, conservation issues, Convention Migratory Species, Conventional on International Trade in Endangered Speci, Coral Spirit Restaurant, East Africa, ecology, education, embryo failure rates, endangered, fishermen, fungus infection, Funzi Island, global conscerns, hawksbill turtle, humpback dolphin, indian ocean, ivory, Kenya, Kenya Sea Turtle Conservation Committee, Kenya Wildlife Service, kisite mpunguti marine protected area, KWS rangers, Lower Mpunguti Island, management actions, natural predation, Red Sea, research, sea grass, sea turtles, tortoise shell, turtle shell, Wasini Village, World Conservation Union
Funzi Island Turtle Conservation
Category: Community Conservation, Eco-tourism, Kaya, Mangroves, Turtles | Date: Aug 17 2009 | By: gvikenya
Howzit!!
My name is Nic. I am a conservation student from South Africa. I have joined Global Vision International (GVI) as a conservation intern to gain experience in the field of marine biology. I have been with GVI for 7 weeks with a further 13 weeks to go.
In accordance with my internship project on the socio-economic impact and tourism strategies of Funzi Island, this involves the establishment of a baseline review of the turtle conservation efforts on the Island. It calls for me to:
• Identify areas that will require further development with direct and indirect benefits for the Turtle Conservation Groups (TCG) and that of the local turtle populations;
• Identify breaches of local laws and legislations that protect the turtles;
• Research alternative conservation strategies;
• Ways in which the GVI can assist the TCG’s in their endeavours;
• Look at ways to increase eco-tourism sustainably and build local awareness of sea turtle conservation;
• Identify environmental impact associated with tourism of the local sea turtle population and hence find the best measures in which to mitigate each impact.
Funzi Island
Sergi (marine science officer for GVI), and I made our way for the weekend to meet up with Douglas, who works for KESCOM and Ali Vuyaa the head of the local turtle conservation group on the Island, Funzi Turtle Club (FTC).
We arrived at Bodo and where transported via the FTC’s boat to the Island. The weekend was peppered with activities which included: a meeting on conservation strategies that are in place and ways to better future endeavours on Funzi, and the local communities involvement in turtle conservation on the island, a walk through the forest where exotic fruits were tasted and tantalised our palates while local monkeys swung freely through the canopy above, a turtle nesting site was visited on a excluded beach cove, a village tour that was undertaken, lunch at a local restaurant had, a visitation of the islands holy kaya’s, meeting with local community involved with the FTC and anti-poaching strategies as well as being shown the local handicrafts made from sandals collected from beach clean ups and a mangrove tour.
One of the sacred Kaya’s
A down side to this visit to this magical place was to see the amount of destruction created by land developers on the forest and mangroves, which the local community are trying to rectify through the TCG’s involvement and the assistance of GVI and KESCOM.
Some of the recent destruction
The island of Funzi is a marvel and the sights and people create a magical ambiance which should be protected, explored and maintained. I look forward to more visits in the near future and working closely with the TCG’s and local communities, in which the partnership between them and GVI will develop their eco-tourism in a sustainable way.
Funzi Island must remain a majestic, tranquil, beautiful island and I will happily be apart of its positive change and development in the future.
Nick with members of KESCOM and Funzi Turtle Club
Tags: anti-poaching, community based organisation, Community Conservation, conservation stratedies, deforestation, destruction, development, funzi bay, Funzi Island, Funzi turtle club, kaya's, KESCOM, turtle nesting
Humpback Dolphins Sighted With Four Calves
Category: Cetacean research, Dolphins, Humpback Dolphins, Kisite Mpunguti MPA, Turtles | Date: Jun 04 2009 | By: gvikenya
Today we chugged our way along the coast of the Shimoni peninsula all hoping for an exciting day to finish off the marine research week. Not long after leaving the Western end of the Wasini Channel our hopes were fulfilled when Shafii sighted Indo-Pacific humpback dolphins just off the coast. First contact was with a mother and calf but shortly afterwards we spied another group about a hundred metres away and so headed off to check them out… and were rewarded with a group of twelve to fourteen humpback dolphins literally frolicking in the shallow waters.
Humpback dolphins are meant to be ’shy’ but this group were anything but as they spy-hopped, breached, swam around the boat and generally showed off, posing for the paparazzi on the boat. Most excitingly, there were four mother and calf pairings - baby humpbacks are particularly cute with their little humps and tiny dorsal fins and they gave our two photo-identification photographers plenty of opportunities while the rest of us ooh-ed and aah-ed at the display. It can’t be a bad day when you are sat on a boat in the sunshine watching a group of dolphins at a time of day when you would normally have been arriving at the office to start work! We had a spectacular snorkel in the warm waters off Kisite Island then spied a turtle swimming on the surface as we headed back to base.
Tags: Cetacean research, dolphin research, indo-pacific humpback dolphin, Kisite Mpunguti MPA, photo-identification, Turtles, wasini island
Bottlenose Dolphin ‘Besty’ And Her Calf At Kisite
Category: Cetacean research, Dolphins, Kisite Mpunguti MPA, Turtles, bottlenose dolphins | Date: May 26 2009 | By: gvikenya
As I mentioned before, the Kusi winds and rain make life difficult for dolphin research on the open seas. Yesterday our efforts on the water went unrewarded again… although I stick with my little mantra that “no data is still valuable data”!
Today however the team aboard ‘Lampard’ started with a promising early sighting, a group of four bottlenose dolphins sighted around the eastern end of Wasini Island. But the rough seas made for tough conditions under which to follow the small travelling group, let alone try to take the photos from which we would be able to try and identify the individuals.
So the search continued, rounding the end of Wasini Island in to Mpunguti marine reserve, cruising between the two Mpunguti islands and on in to Kisite marine park. The destination was Kisite Island where we hoping that the sheltered side would allow us at least to look for turtles in the water along one of our snorkel transects. However before we ready to jump overboard, another group of four bottlenose dolphins approached the boat as the wind and waves subsided… leaving us with good conditions and a perfect opportunity to get back to what we had been trying earlier, photo-identification.
Besty with her distinctive dorsal fin notches
Both Andy and Jamie were armed with cameras in a photo-ID duel. It was the two adult dolphins that were our key target, as they would hopefully be individuals catalogued over the past 3 and a half years that we could recognise. And in fact they both were, Nene (or individual 083) and Besty (individual 017 - the 17th individual we formally identified, from 2006). Besty was accompanied by her calf and the fourth individual was a sub-adult. With the local dolphins having been elusive for much of the last few months, it was pleasing to enjoy these four showing off in the calm waters around Kisite Island. The calf in particular seemed to be in playful mood, posing for the camera with ’spyhops’ - holding the head vertically out of the water.
Nene with Besty’s calf spyhopping
No turtles on the transect, but the day was far from disappointing and seeing Besty again is like meeting up with an old friend.
Tags: bottlenose dolphins, Cetacean research, kisite island, Kisite Mpunguti MPA, marine mammals, turtle research, wasini island
Witnessing Unique Dolphin Behaviour
Category: Cetacean research, Dolphins, Kisite Mpunguti MPA, Turtles | Date: May 04 2009 | By: gvikenya
Megan is working with GVI over the next few months and describes her experiences on our marine research project so far:
Growing up in the central California desert, I developed a fascination for water. I followed my affinity to Washington State, where low clouds, mist and the Puget Sound shaped my existence for five years. I have come to know water in many ways. After only one week in Kenya, the unique anthropological and environmental culture of water begins to reveal itself. We experience it in late afternoon salt-water runs, thick humidity, dynamic rain storms, and most notably, the Indian Ocean.
Each day brings hard work, but also terrific amounts of beauty. Typically, we spend eight hours on the water in our research boat a traditional wooden dhow. The day is long and hot. Aided by Shafii the captain, we carry out turtle transects and dolphin surveys. We have spotted rays, reef sharks, hawksbill and green turtles, barracuda, and bottlenose and humpback dolphins. Often, the dhow startles schools of small, flying fish, which travel out ahead of the boat. One of our most interesting sightings this week involved a mother bottlenose dolphin and her calf. Using a dead parrot fish, the mother appeared to teach her calf to feed. The mother would approach, take the fish in her mouth, and then release it. The calf then tried. Significant amounts of time on the water allow us to witness many different dolphin behaviours.
Last night, the rains came. After a week in the hot sun and salty showers, we welcomed the fresh water. I look forward to more time in our small corner of the Kenyan coast. With little electricity, a vast range of native species, our proximity to the friendly Mkwiro villagers, and vast amounts of water on our doorstep, working with GVI provides you with a unique opportunity to push yourself physically, mentally and emotionally.
Tags: bottlenose dolphin, dolphin behaviour, dolphin research, indian ocean, mkwiro, turtle research
An Epic Day Of Dolphins (And Turtles)
Category: Cetacean research, Dolphins, Kisite Mpunguti MPA, Turtles | Date: May 01 2009 | By: gvikenya
Keziah gives us the news from yesterday’s marine research:
I woke up 6am in Shimoni, waiting to find out when the boat would come to pick me up at the jetty. With the rainy season, start times of marine surveys become a wee bit unpredictable - with one eye on the rain clouds you just have to wait for the opportunity! However, the sun was shining, there was no sign of rain and a phone call later I was jogging through Shimoni village to the boat.
We headed out towards Funzi Bay, across Nyuli Reef and to Upper Mpunguti Island when we had our first sighting of dolphins, something that has also become less predictable with the season. At first we thought there were eleven Indo-Pacific bottlenose dolphins, but soon realised this was an underestimation. Ten on the port side, ten on the starboard side, we didn’t know quite where to look, excitedly swapping sides with a chorus of gasps and squeals from our team, and splashes and blows from the dolphins.
Several individuals were identified immediately, including one of my favourite pairs; Besty and her calf. I had the pleasure to be on the boat when we spotted Besty and her newborn calf for the first time, adorably small with the foetal folds still showing! Others including Twende and the yet to be named individual ‘063’ were also identified.
The group were at first travelling fast in a southerly direction, then their pace slowed, with a couple of individuals approaching the boat to bow ride. This enabled us to get good shots of the dorsal fins, which will be used for photo-identification in our mark-recapture study. Unfortunately we also noticed an adult and juvenile that appeared skinny compared to the rest, with their ribs visible. We hope this wasn’t a sign of illness in the population or lack of food in the area… After taking enough photos we left them to continue south to the open sea.
The dolphins had done us a service, leading us to the start of the snorkel transect our survey leader had selected for the day, by Kisite Island… and it turned out to be the perfect day to pick this transect! As we climbed out of the water to board the boat post-survey, everyone’s face was an absolute picture: 3 hawksbill turtles, 5 green turtles and 1 moray eel! Ruth and I even had the pleasure of watching one of the green turtles swim slowly to the surface, stop for a few seconds and then continue to raise its head out the water, beak open for a gasp of air. This was closely followed by us both surfacing and giggling hysterically with joy having witnessed a behaviour in full that we had only seen before from above the surface as a turtle’s head appear and disappear in a second!
With the weather being on our side, we decided to return towards Funzi Bay again, but the sea was just a little too rough, so we diverted in to Wasini channel. Within 5 minutes of turning the boat around there was a shout from Katalin at the front, “DOLPHIN”, followed quickly by “HUMPBACK DOLPHIN!”. We had to wait 10 minutes for the individual to reappear, a very large Indo-Pacific humpback dolphin that seemed curiously darker than usual. We put this down to the glare of the sun, and waited for what we thought was a lone individual to resurface. Then two individuals surfaced riding a wave, both smaller than the first. Several more minutes of waiting and we were shocked to see not only the three individuals from before, but another two adults and calf!
We continued to watch them for 20 minutes as they were feeding, coming up for several breaths before peduncle dives took them under for several minutes. After surfacing for the third time, in unison, they formed a compact group, changed direction and headed south, crossing the channel towards Wasini Island. We were able to compare the colouration of the first individual and yes, he was distinctly darker, not something we had seen before. The mother of the calf had a deep scar around her neck, possibly from a fishing line. Only 2 weeks ago an individual was spotted with a huge chunk out the back of his dorsal fin, the shape suggestive of a boat propeller injury. Both these wounds emphasize the humpback dolphin’s vulnerability to fishing activities, boat traffic and marine debris around coast lines. But fortunately also an ability to recover from significant injury.
All in all it was quite an epic day for our research team and for me one of complete brilliance!
Tags: bottlenose dolphin, Cetacean research, dolphin research, funzi bay, green turtle, hawksbill turtle, humpback dolphin, Kisite Mpunguti MPA, turtle research, wasini channel
Marine Research Through the Eyes of a Naval Officer
Category: Cetacean research, Dolphins, Kenya Wildlife Service, Kisite Mpunguti MPA, Turtles | Date: Apr 27 2009 | By: gvikenya
Jon “JR” Olson is a U.S Naval Attache based in Helsinki. He has come to the south coast of kenya for two weeks to join GVI in its marine research project in the Kisite-Mpunguti Marine Protected Area. He has kindly written this blog about his first day as part of the research team.
The 0530 alarm went off next to my head and, at first, I forgot where I was. Then, the heat and humidity of the early Kenyan coastal morning kicked in as I peeled off the sheet from my sweating body. While some would be put off by this rather uncomfortable fact, I, personally, felt exhilarated as this was to be my first official day working as a member of the dolphin research project in the Kisite Mpunguti Marine Protected Area.
By 0600 I was showered, had organized by personal snorkel gear, camera, sunscreen, some additional clothes, etc, and was in the kitchen eating a quick breakfast. I was the new guy and had to prove to the GVI veterans I could contribute to this project. Contribution started with me helping to fix breakfast, cleaning up the kitchen area afterwards, packing the equipment for the day, etc. By 0630 our group of nine people was hauling the gear down to the water and loading up SQUIRREL, our shuttle boat. A few minutes later we were motoring our way across the Wasini Channel bound for Shimoni Village and our moored research boat known as BARDAN. After transferring our gear to BARDAN, we got underway on our search for dolphins and other marine life.
Within minutes of starting out, we spotted our first pod of bottlenose dolphins, right in the middle of the Wasini Channel. We spent 45 minutes following a pod of seven dolphins as they transited west down the channel. We took dozens of photographs, logged the entire event, and ended the sighting around 0745. BARDAN then turned east and we headed out into deeper water destined for Kisite Island by way of Funzi Bay. We motored slowly under cloudy skies, which, on this particular morning, considering my still pasty white flesh, was OK with me. The conditions were absolutely perfect for searching the seas for pods of dolphin and other marine species. And, as luck would have it, while transiting south from Funzi Bay, we spooked a large surfacing turtle which promptly inhaled deeply and rapidly dove back into the deep.
Photograph showing a bottlenose dolphin feeding on a turtle
Some two hours after we departed Shimoni, we arrived in the channel area of the Kisite Mpunguti islands. It was not long before we spotted a small group of tourist dive boats and we set course for those boats as it was likely they would be accompanied by some type of marine life. Once again, we were lucky and as we arrived in the vicinity of the tourist boats, we spotted a number of pairs of bottlenose dolphins, all of them engaged in socializing behaviors, and possibly some feeding. We tracked these pairs of dolphins using cameras, the event and sighting logs, and maintained contact for approximately 30 minutes. The dolphins then disappeared and we began making our way toward our snorkeling destination near Kisite Island where we would snorkel a defined path, known as a transect, in search of more turtles.
Once in the water, which, to me, feels like bath water because it is so warm, we started our transect and were not disappointed after sighting three turtles, two of which we were able to specifically classify as Green Turtles.
A bottlenose dolphin with scars that are believed to be the result of a shark attack
Once back in the boat at the end of our snorkel phase, we logged the information on the turtles in the Mega Fauna log and then proceeded back to the northeast, heading back to base for lunch and afternoon of data entry into the computers and some time spent correlating dolphin photos with individual dolphins. It was amazing to me to see the truly distinctive dorsal fin marks on each of the local, or resident, bottlenose dolphins listed in the photographic data base. After expert tutelage by GVI intern Karen, I was able to quickly identify a number of dolphins in the data base with photos taken by other research teams, providing much needed data for GVI to inform the Kenya Wildlife Service about key aspects of dolphin behavior. This information will allow KWS to develop better policies for protecting the Marine Protected Area, which will, in turn, protect the bottlenose dolphins habitat.
As I finish this blog, I realize it is almost 10PM and I have to get up again shortly after 0500 tomorrow morning. I get to do it all over again! I can’t wait!
Tags: bottlenose dolphin, Cetacean research, funzi, green turtle, kisite mpunguti marine protected area, marine protected areas, mkwiro, shimoni, turtle
Marine Research Through the Eyes of a Naval Officer
Category: Cetacean research, Dolphins, Kenya Wildlife Service, Kisite Mpunguti MPA, Turtles | Date: Mar 16 2009 | By: gvikenya
Jon “JR” Olson is a U.S Naval Attache based in Helsinki. He has joined GVIs marine research proramme on the south coast of kenya for 2 weeks. He has kindly writtten this blog about his first day out on the water.
I woke up feeling exhilarated as this was to be my first official day working as a member of the dolphin research project in the Kisite/Mpunguti Marine Protected Area.
By 0600 I was showered, had organized by personal snorkel gear, camera, sunscreen, some additional clothes, etc, and was in the kitchen eating a quick breakfast. By 0630 our group of nine people was hauling the gear down to the water and loading up SQUIRREL, our shuttle boat. A few minutes later we were motoring our way across the Wasini Channel bound for Shimoni Village and our moored research boat known as BARDAN. After transferring our gear to BARDAN, we got underway on our search for dolphins and other marine life.
Within minutes of starting out, we spotted our first pod of bottlenose dolphins, right in the middle of the Wasini Channel. We spent 45 minutes following a pod of seven dolphins as they transited west down the channel. We took dozens of photographs, logged the entire event, and ended the sighting around 0745. BARDAN then turned east and we headed out into deeper water destined for Kisite Island by way of Funzi Bay. We motored slowly under cloudy skies, which, on this particular morning, considering my still pasty white flesh, was OK with me.
Bottlenose dolphin feeding on a turtle
The conditions were absolutely perfect for searching the seas for pods of dolphin and other marine species. And, as luck would have it, while transiting south from Funzi Bay, we spooked a large surfacing turtle which promptly inhaled deeply and rapidly dove back into the deep.
Some two hours after we departed Shimoni, we arrived in the channel area of the Kisite Mpunguti islands. It was not long before we spotted a small group of tourist dive boats and we set course for those boats as it was likely they would be accompanied by some type of marine life. Once again, we were lucky and as we arrived in the vicinity of the tourist boats, we spotted a number of pairs of bottlenose dolphins, all of them engaged in socializing behaviors, and possibly some feeding. We tracked these pairs of dolphins using cameras, the event and sighting logs, and maintained contact for approximately 30 minutes. The dolphins then disappeared and we began making our way toward our snorkeling destination near Kisite Island where we would snorkel a defined path, known as a transect, in search of more turtles.
A bottlenose dolphin with severe scarring. Thought to be the result of a shark attack
Once in the water, which, to me, feels like bath water because it is so warm, we started our transect and were not disappointed after sighting three turtles, two of which we were able to specifically classify as Green Turtles. Once back in the boat at the end of our snorkel phase, we logged the information on the turtles in the Mega Fauna log and then proceeded back to the northeast, heading back to base for lunch and afternoon of data entry into the computers and some time spent correlating dolphin photos with individual dolphins.
It was amazing to me to see the truly distinctive dorsal fin marks on each of the local, or resident, bottlenose dolphins listed in the photographic data base. After expert tutelage by GVI intern Karen, I was able to quickly identify a number of dolphins in the data base with photos taken by other research teams, providing much needed data for GVI to inform the Kenya Wildlife Service about key aspects of dolphin behavior. This information will allow KWS to develop better policies for protecting the Marine Protected Area, which will, in turn, protect the bottlenose dolphins habitat.
As I finish this blog, I realize it is almost 10PM and I have to get up again shortly after 0500 tomorrow morning. I get to do it all over again! I can’t wait!
Tags: , bottlenose dolphin, green turtle, marine research, shark
A Bad Day On The Ocean Is Better Than A Good Day In The Office
Category: Cetacean research, Dolphins, Turtles | Date: Feb 25 2009 | By: gvikenya
Ross Hellings has recently joined us as a volunteer to assist in our research and community work, and gives us his first impressions of life with GVI Kenya:
I arrived on base in Mkwiro on Saturday afternoon after an adventurous trip from Mombasa, and from that point on it’s been a hard, fast and fun learning experience…
Day 1: camp training with exciting items like fire extinguisher training, oxygen tank checking, radio training, safety lectures and practice scenarios, and the list goes on!
Day 2: the real fun began… we started the day with lectures and tutorials regarding the on-going marine research, and then into identification of different marine mammals and turtles, and methodology of the research. A swim test was also thrown in for good measure before lunch, under threat of otherwise needing to wear highly fashionable fluorescent orange life vests for 2 weeks.
Day 3: our first day on the water, and what a day! Early on we found Bottlenose dolphins, and then the highlight, a pod of almost 100 spinner dolphins! These fantastic mammals stayed with us for around 30 minutes, playing, socializing, jumping, surfing the waves, and bow riding! It was an amazing experience to watch. We ended the day with an ‘exam’ to test our identification skills as well as our knowledge of the methodology and practice of the research.
Day 4: again early on in the day we had our first encounter, this time humpback dolphins, followed shortly by bottlenose dolphins!
I could continue, but there is too much to say… My first week has been amazing, seeing the major species we would expect to see in the region, as well as spotting a few elusive turtles! I can definitely say doing marine research is much much more fun than a normal working day; I have a new saying, a bad day on the ocean is better than a good day in the office!
May the adventure continue!
Ross
Tags: bottlenose dolphin, dolphin research, humpback dolphin, spinner dolphin, turtle
Spinner Dolphins East of Kisite-Mpunguti Marine Protected Area
Category: Cetacean research, Dolphins, Kisite Mpunguti MPA, Turtles | Date: Jan 29 2009 | By: gvikenya
It doesn’t happen as often as I’d like with so much else going on but yesterday I joined the marine research team, 6.30am departure aboard our research vessel ‘Lampard’, on calm waters with the rising sun to warm us…
I take the tiller, captaining the boat east out of the Wasini channel, the rest of the team assume positions for dedicated watch. Passing the coastal forest of Shimoni I spot a colobus in the canopy and an African Fish Eagle… but today is the marine research programme, and it’s dolphins and turtles that we search for.
Rounding the south-east corner of Shimoni peninsula we enter Funzi bay, hoping to spot Indo-Pacific humpback dolphins that favour these near-shore habitats. No sign of them today. We pass a green turtle, but sadly a recently dead one floating at the water’s surface. No obvious cause of death, but this time of the year, during the kaskazi winds (the NE monsoon winds), seems to bring a peak of turtle mortalities each year. Much of Funzi bay is shallow and doesn’t leave us much room to manouvre so we turn the boat around and head south, towards the continental shelf and open water. A flock of terns dives persistently at the water’s surface but the fish shoal they target has gone unoticed by any dolphin.
A more distant splash and a suspected dolphin sigthing, something dark and rounded surfacing. Half-way there before it becomes evident it’s another dead turtle bobbing at the surface. A huge one this time, a hawksbill, it’s been dead for longer and given the size it reached, somehow a sadder loss as we circle around it and continue our route south.
Sergi, our marine research officer takes over from me at the stern as I join the rotation of observers up front, each with our 45 degree field of view to patrol. Tom calls out a potential dolphin far ahead, an apparent leap and splash, Sergi steers us toward the point on the horizon and we keep scanning the surface. We rotate positions, both Tom and I looking forward, he sees something again, but is disappointed when there’s no following dorsal fins or repeat splashes.
Still we head further south, further from the shore and are rewarded 15 minutes later by 4 dorsal fins breaking the water’s surface ahead. They approach the boat to ride the bow and a further 3 dorsal fins join them. We expect them to be Indian Ocean bottlenose dolphins out here, but the small triangular fins, the smaller torpedo-like bodies and the long narrow beaks all point to something different. Three tone body colouration as they surface confirms we have found a small group of spinner dolphins.
Sergi hands me the camera, I try to get photos of the dorsal fins of each one as they sruface to breathe. It’s not as easy as it seems it should be. Unpredicatable quite where and when they will surface as they dart across the bow just below the surface, the angle has to be right, the sun behind, sharp focus… and you have to be quick. Sergi uses the time to talk the team of observers through the dolphins’ behaviour. Close to the surface, regular slow shallow surfacing, no obvious directional travel; they were probably resting. We leave the small group and within minutes an apparent lone individual further away leaps from the water, an acrobatic spin that gives them their name. Then 10 dorsal fins surface to our right. We barely get through counting them when at least 20 fins appear on the right. Our group of 7 was actually part of a larger group, in the end we estimate 40 to 50 individuals.
Spinner dolphins are thought to be seasonal visitors to this part of the Kenyan coast, possibly crossing the channel from Pemba, following the food with the kaskazi. In previous years we have recorded them between mid-February to mid-March, in large active groups (up to and over 200) off the shelf, south of the MPA. This kaskazi we had one sighting in December, and then last week. We do not think that this season represents any ‘break from the routine’ but more likely that our new research vessel gives us a higher, clearer viewing platform, and survey routes take us further from shore so we simply see more. The real exctitement is that we are now understanding more about these seasonal visitors; their ’season’ is longer than we first thoguht, and they are using habitats east of the MPA for resting suggesting they may be here for more than just quick foraging forays. Ironically, the fact that they are consistenly recorded outside of the marine protected area is not of too great concern. They are free from disturbance by the dolphin-watching tourist boats and in the absence of commercial fishing activities are not threatened here by high levels of accidental deaths from by-catch that plague some of their open-ocean counter-parts through industries such as tuna fisheries which are yet to be quite as ‘dolphin-friendly’ as we might be lead to believe.
I’ll keep you posted throughout our ’spinner season’…
Tags: African Fish Eagle, Colobus, dolphin research, green turtle, hawksbill turtle, Kisite Mpunguti MPA, spinner dolphin
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