Viperine sea snake
Hydrophis viperinus, the viperine sea snake, is a species of Elapidae (Hydrophiinae-sea snake) and Thalassophina viperina is its synonym. It is thought to be naturally rare but widespread. It is venomous.
Northern coasts of the Indian Ocean and western Pacific: from the Persian Gulf to around India to Indonesia and southern China. IUCN lists the following countries: Bahrain, Bangladesh, Cambodia, China, India (Andaman Is., Nicobar Is.), Indonesia, Iran Iraq, Japan, Kuwait, Malaysia, Myanmar, Oman, Pakistan, Philippines, Qatar, Saudi Arabia, Singapore, Sri Lanka, Taiwan, Thailand, United Arab Emirates, and Vietnam.