imagine adding Fish, Sharks, Dolphins, Coral Reefs, Shipwrecks(loot in said shipwrecks), An actual sea monster(not just an elder guardian, more fish(hundreds), Seaweed, jellyfish, seahorses, and make some of the fish/sharks/dolphins actually jump out and back into the water.
The water we have now is just emptiness nothing, a squid and a ocean monument is all we have.