Microcephalophis cantoris

Cantor's narrow-headed sea snake, also called Cantor's small-headed sea snake, is a venomous sea snake. The maximum recorded total length is 1,450 mm for males and 1,880 mm for females, with maximum tail lengths of 120 mm and 140 mm (Wikipedia, general species account).

It is found along Indian Ocean coasts including the Andaman Islands. The Reptile Database lists Gujarat and the Andaman Islands for India. The account used here gives no information on habitat, diet or breeding.