Well, it will make the ocean more salty.
True, but it just makes a very very small part of the ocean more salty until it redistributes. Of all things that get dumped in the ocean, sewage, street run off, oil... Salt isn’t the one I am going to worry about.
However it would be at such an insignificant level as not to have any true impact. The left just want those people to die, they could Not kill them at birth so they’ll take any means possible.