What do you think would be cool additions to the Ocean biome?

I was thinking and the Ocean is (relatively) empty, and I’m aware that more will be added to the Ocean in the future, but I’m just curious as to what the community thinks would be good additions.

Imo, once you get a Karve there’s not much to worry about in the ocean. I think something to test you or your friend’s skill as a helmsman would be cool.

Instead of your usual murderous beast, or little skeeter fuck, it’s just a wave. Rogue waves. Maybe they could vary in size randomly, or they could appear in some areas more commonly, or larger and smaller in other areas, depending on how the ocean floor looks. Something about the idea of turning around and seeing a wave, taller than what would fit on my screen, just seems awesome.

Besides that, Selkies or some sort of undersea biome would be cool, although the latter seems like asking a bit much lol. What are all y’all’s’ thoughts?