Enhydrina schistosa, commonly known as the beaked sea snake, (Sinhalese:වාලක්කඩියා), hook-nosed sea snake, common sea snake, or the Valakadyn sea snake, is a highly venomous species of sea snake common throughout the tropical Indo-Pacific. This species is implicated in more than 50% of all bites caused by sea snakes, as well as the majority of envenomings and fatalities.