Researchers came to this conclusion after capturing some 500 of the sea snakes at different periods during the year. The researchers put the snakes in freshwater tanks and calculated how much they drank by killing them and baking them in ovens, which removed the water they'd stored, Phys.org explains. Those captured during dry periods drank heavily, while those taken during the wet season largely refrained. The snakes' population numbers have been dropping, and it may be because of this dependence on those rainy months; climate change is altering rainfall patterns.
That's right, it's climate change causing their population to drop and not researchers catching and cooking them.