Laticauda Colubrina is a species of venomous sea snake found in tropical Indo-Pacific oceanic waters. It spends much of its time under water to hunt. The venom of L. colubrina, is a very powerful neurotoxic protein. While their venom ranks among the most toxic in the world, they are non-aggressive that humans are rarely bitten.

Poisonous watercolor number 7 in my collection of poisonous watercolors