David Kyle Johnson

And anything that reduces the energy, like cutting their energy use by a third would be huge, would be absolutely huge.

Oh, God.

So, again, this is, I had to say, under modeled conditions because they haven't physically tested it yet, but it does seem to be very promising.

All of this means that, number three, in a recent extensive survey of Arctic fish, researchers found the first example of a fish, the snailfish, that is able to use its tail fin for backward propulsion is the fiction.

What makes it the fiction, though?

What part of it is the fiction?

Is it that no fish could swim backwards, or this isn't the first fish to swim backwards?

Kara thinks this isn't the first fish to swim backwards.

I go with Kara.

I go with Kara.

All right, the answer is, it's not the first one, and this fish can't swim backwards.

The paper, or the press release of the paper is like, fish can swim backwards.

Then when I looked at the study, it's like, this fish isn't swimming backwards.

It's just curling up its tail and allowing the current to carry it backwards.

It's passing.

Yeah.

So then I said, that took me down the rabbit hole.

Well, can any fish swim backwards?

Specifically, so here's the thing, specifically using its tail fin.

So that's a critical element because there are lots of fish that could swim backwards, but these are fish that swim through undulation like an eel, right?