The creationists are mightily annoyed at the broadcast of a commercial that has John F. Kennedy talking about our evolutionary history as marine organisms.
I’ve got some complaints, too.
First, taking a trip on a cruise ship really isn’t any connection with the sea. You’re on a giant boat. You can take the whole trip without getting wet, seeing a fish that isn’t on the buffet table, or being exposed to an invertebrate. It’s an entirely lubberly experience.
Second, and even more importantly, Kennedy was wrong. The concentration of salts in our blood is approximately 300 mOsm/L, seawater (which I have to make artificially in the lab, since we’re rather remote from any ocean) is 1000 mOsm/L.
As usual, the creationists are not only wrong, they’re wrong for all the wrong reasons.