Quote from Azkhare
It occured to me, maybe killer whales could be added too, just so sharks don't massacre dolphins. Orcas would feed on sharks and pretty much anything that dares to approach a big body of water. If you know orcas, they shore themselves to get their food. That would be an interesting mechanic. They would prey on everything but dolphins, would only spawn on deep, large bodies of water, and would have a LOT of health. They would drop 0-2 orca teeth, and 2-4 leather.
I think those would be my suggestions. Tell me if I made any spelling errors or anything else. See you!
Some kind of shark would be cool great idea. Maybe a great white since oceans are bigger now and theres room for one. And orcas are a sweet idea too+