English Name : Hook nosed sea snake
Scientific Name : Enhydrina schistosa
Family : Hydrophildae
Tamil Name : Valai kadiyan
Description: Scales keeled. The head slightly broader than neck. Scale at tip of snout extends downwards and resembles a beak hence the common name. Tail is flat and oars like. Upper surface of head and body pale gray, bluish or greenish gray unbanded or faintly banded. Underside is yellowish white. Young are similarly colored with dark blackish bluish gray bands. Belly scales distinct slightly larger than those on the sides of the body.
Distribution and Status: Common in Indian coasts. Also seen in Pakistan, Bangladesh, Sri Lanka and Indo pacific waters (Thailand, Malaysia and Singapore).
Habitat: Usually found in shallow coastal waters or in river estuaries. Activity is determined by tides. Strong tidal action is avoided.
Habits: Venom is 4 to 10 times more toxic than Cobra venom. Excellent swimmer active by both day and night. It is capable for staying under water for prolonged periods. Helpless on land
Food: Feeds on fish
Life cycle: Females reach maturity at 18 months and bear 4- 33 young in February – May.
Role in the environment. Though venomous bites are rare, fishermen are at a risk from snakes that get entangled in their nets
Photo source: http://randomlists.co/most-venomous-snakes-in-the-world