Large-scaled Sea Krait

The blue-lipped sea krait, also called the blue-banded sea krait or common sea krait, is a venomous sea snake of the subfamily Laticaudinae found in the Indian and western Pacific oceans. The upper lip is dark brown. Males average about 910 mm in total length and females about 1,070 mm, with tails of about 110 mm (Wikipedia, general species account).

Sea kraits forage in reefs and return to land to digest their prey, mate, slough and lay eggs. The species is known to warm up in wedge-tailed shearwater burrows. The Reptile Database lists eastern India including the Nicobar and Andaman Islands.