Sea/Water Theme Champs and Lore

So far there are 2 Champs that came from the sea: Fizz, Nami (Nautilus maybe). And there are a few skins that involve water theme (Atlantean, Deep Sea) I think the ocean is a very rich source for more creations. Riot should invest on this, like making more champs that come from the marine part of Runettera, and make like a lore about it. What do you guys think?