Venomous sea snakes are, on a whole, ridiculously more venomous than venomous land snakes. As far I as recall.
Like the very venomous coral snake:
New World coral snakes possess one of the most potent venoms of any North American snake. However, relatively few bites are recorded due to their reclusive nature and the fact they generally inhabit sparsely populated areas. Even in areas that are densely populated, bites are rare.
Also not to be confused with the non-venomous king snake:
Nobody talks about it? There are entire myths about sea serpents.
Don’t boop it.
You boop, I’ll watch.
It closes its noses.