The blue-lipped sea krait (Laticauda laticaudata) is a species of sea snake.

Diagnostic Characters

Ventrals large, one-third to more than one half the width of the body; nostrils lateral; nasals separated by internasals; 19 longitudinal rows of imbricate scales at midbody; no azygous prefrontal shield; rostral undivided; ventrals 225-243; subcaudals: males 38–47, females 30–35 (ventral and subcaudal counts after Smith 1943:443). Upper lip dark brown. Total length: males 910 mm (35.8 in), females 1070 mm (42.1 in); tail length: males and females, 110 mm (4.3 in).

Distribution

Indian Ocean (E India, Sri Lanka, Myanmar (= Burma), Thailand, Indonesia, Philippines), coasts of Fujian and Taiwan (R.O.C), Andaman Islands, Bay of Bengal, coasts of Malay Peninsula to New Guinea, Japan, Polynesia, Melanesia, Solomon Islands [McCoy 2006], New Caledonia.