Sea snakes don't drink seawater; they need fresh water.

The claim that sea snakes don't drink seawater and require fresh water has support from biological studies suggesting sea snakes primarily rely on fresh water intake, typically from rainwater. Although sea snakes live in marine environments, they are not adapted to efficiently process seawater for hydration. Web evidence from the Natural History Museum and Wikipedia aligns with this understanding, confirming the physiological need for fresh water intake in sea snakes. However, these sources did not provide direct statements about sea snakes specifically avoiding seawater in favor of fresh water, but understanding from studies supports this claim.