I literally already said the answer to that in my original comment.

Uhh, no you didn't? At least, not the way I interpret it.

It looks like you were saying "oceans are getting less salty, and therefore this adaptation is less needed". But @SpaceNoodle@lemmy.world was saying "the reason they're getting less salty is because fresh water is becoming more scarce, and therefore the adaptations are more needed".