Hydrophis viperinus
Range
Northern coasts of the Indian Ocean and western Pacific, from the Persian Gulf to Indonesia and southern China
Size
Total length: males about 92.5cm, females about 82cm
The viperine sea snake is a venomous sea snake of the northern Indian Ocean and western Pacific, found from the Persian Gulf around India to Indonesia and southern China. It is more or less two-coloured, grey above and white below, with the two colours usually clearly separated along the sides, and often has 25 to 35 dark rhomboidal spots on the back, rarely dark bands (Wikipedia, general species account).