Widely regarded as being among the most venomous sea snakes, the beaked sea snake has extremely powerful venom. It is also one of the more aggressive species and thus is especially dangerous.

Sea snake venom is 10 times more potent than the venom of a cobra. The beaked sea snake, one of the few sea snakes that are known to be aggressive, accounts for about 90 percent of human deaths ...

Available data are very patchy but the deadliest sea snake in terms of human fatalities may be the beaked sea snake, Hydrophis schistosus. It’s described as aggressive and relatively frequently ...