I remember seeing how quickly I could kill myself for a joke. So I spawned in and immediately swam into the deep ocean. I was hoping a mosa or something would eat me, but no, it was these things. Never liked them since
The first time I saw one of these, I was on a rock in the middle of the sea taming a Pteradon. It came close, scared me, and since I thought it was aggressive, I gritted my teeth and bravely killed it. Shut up, noob's mistake.