Like sea turtles, whales, different saltwater fish (besides sharks, dolphins, orcas), some more variety of corals, jellyfish, stingrays, seals, otters, merfolk, maybe even sea monsters besides a giant sea dragon/leviathan. saltwater fish could include: clown fish, angel fish, angler fish, barracuda, yellow tang, surgeon fish, eels, morays, barred knifejaw fish, sea bass, tuna, sun fish, butterfly fish. I feel like adding some color and variety into the underwater maps and towns would help make it look more realistic.