19. Beaked sea snake, hook-nosed sea snake, common sea snake (Enhydrina schistosa)
LD50: 0.164
Beaked sea snake ranks 19th in our list of the 20 most venomous snakes in the world. This is an aquatic species that lives in waters of Indian and Pacific oceans and is very common near the coasts of India and Malay Peninsula, and a bit less common around northern Australian coasts. It inhabits the shallow sea and lagoons, and sometimes even freshwater lakes, and was even reported in Goa river in India, and some Australian rivers. The average body length goes up to 140 centimeters. Dorsal (back) side is grayish in color, with darker stripes covering the base, and ventral side (belly) is slightly lighter, yellowish white.