18. Seakrait, Black-banded seakrait, Large-scaled seakrait (Laticauda laticaudata)
LD50: 0.16
Seakrait is a common species in southwestern Pacific ocean around Malaysia, Indonesia, Papua New Guinea, up to China and Japan, and seldom found around Indian coast, where inhabits mangroves and coral reefs. Seakrait has a slender body with an average length of 70 centimeters, and it is vividly colored, with a light gray or bluish base with dark black stripes. Luckily, even being very venomous, it rarely attacks, even when being threatened and provoked.