Swimming by myself in the Sea of Cortez, I was surrounded by a pod of bottlenose dolphins. After observing me for a while, they suddenly started laughing, did a few flips and other acrobatic displays, and then swam away.

I was left in no doubt -- none whatsoever -- that they were laughing at the absurdity of what I evidently considered "swimming".

Maybe I'm anthropomorphizing them... but I'm pretty sure they were dolphopomorphizing me first, and it was cracking them up.

Anyhow, those dolphins were a bunch of punks.