Easily the best way to get black pearls early. Killing these critters might be slower than alpha hunting, but it is much safer. If you're early, they also drop oil and chitin, which can be tough to come by. They hide under coral, so keep your eye out and watch for Mosas!
I think it should be ride able like the scorpion dino but makes it so you can breath underwater without scuba gear and I hope if this happens... wildcard don't make it like the giga. "I'll follow you to texas"
Normally I see their shadow but when I get closer it disappears into seaweed but I found a way to stop this. Dismount your ichthyosaurus or tusoteuthis and these guys will start showing up. This mean easy black pearls!!!!!