Subramanian Sankar |
Flat no 6, GRN TEMPE 14/11 5th main road Nanganallur Chennai 600061 |
subbush@gmail.com |
9840111606 |
06-08-2016 |
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INDIA - Tamilnadu |
Pan-tropical spotted dolphin |
12.520495436512169, 82.56320625000001 |
It is unknown whether they were feeding or carrying out a daily local movement in relation to prey movement. The fishermen mentioned that sightings of dolphins were common place and abundant in these waters .They confirmed the presence of schools of tuna below A notable observation was the complete absence of Shearwaters - Ardenna and Calonectris genuses– 522 nos. that were sighted in multiple groups on a pelagic birdwatching trip on 26th June 2016 a month ago along a similar path in the sea. It is not known whether their absence could be correlated to the presence of the huge number of dolphins. The eBird checklist of the previous trip along with the GPS tracks can be seen here: http://ebird.org/ebird/view/checklist/S30608771
http://www.iucnredlist.org/details/20729/0
https://youtu.be/Z-VGd_n2RVM
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On 6th August 2016 on a pelagic birdwatching trip on a fishing trawler a huge pod of dolphins were sighted off the Chennai coast. Videos and photographs confirmed a super-pod of Stenella atttenuata also known as Pan-tropical Spotted Dolphin. Three to five dolphins were breaching at a time every 5-10 minutes, and the estimate was about 10-15 pods of 100 dolphins/pod. As the boat stayed with the dolphins for about 90 minutes the size of the full group could be in hundreds if not a thousand. The dolphins were moving constantly showing acrobatic and social behaviour. They seemed to be moving while locally milling. There were calves and adults, singles, pairs and big groups. The sighting was between 12.40 p.m. 13.17592329, 80.51683536 until about 02.15 p.m 13.12593895, 80.509396. The temperature was around 36 C at about 12 noon, wind speed 18 km/h in West/South-West direction at 12 noon, the depths of the sea in the range of 90-95 meters.
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http://www.marinemammals.in/submit-record/Rama_Neelamegam.jpg, http://www.marinemammals.in/submit-record/Rama_Neelamegam_2.jpg, http://www.marinemammals.in/submit-record/DSC_0372.JPG, http://www.marinemammals.in/submit-record/DSC_0421.JPG, http://www.marinemammals.in/submit-record/DSC_0422.JPG |
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Total Image(s): 5
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