Not AvailableOn 26.6.’99 one Risso’s dolphin Grampus griseus was accidentally caught by drift gill net operated off Punnaikkayal at a depth of 10-15m. The specimen was a female measuring 2.63m and weighing approximately 210 kg. Thera are no earlier reports on the stranding of the species along the Gulf of Mannar. A male sea cow Dugong dugon measuring 1.21m in length and weighing approximately 30 kg was accidentally caught on 14.1.2000 at a depth of 30-40m in drift gill net.Not Availabl