If you get caught in a rip current and dragged out towards sea, don’t try to swim against it, swim parallel to the beach til you get out of the current and then make your way to shore.
Or better yet, if you see one narrow section of the water that’s unusually still (as in there’s a visible break in the middle of a wave) don’t swim in it (edit: the reason is that this is how you identify the rip current in the first place)
"People having seizures cannot swallow their tongue. Do not put anything in their mouth."
It's not that people actually swallow their tongue, it's that their tongue will rest in the back of their throats restricting their ability to breathe. People have heard this and misunderstood what was actually happening and spread misinformation for decades. So then things like this come out without actually addressing the truth or the root of the phrase. Your tongue isn't going to rip out of your mouth and go down your throat. It can rest in the back of your throat and choke you to death. That's what they are saying when they say "swallow your tongue."