Ocean of Boscage 4

What's your world's largest ocean, and what lurks in it depths? Do people fear it or own it?
Boscage 4 only has one ocean and it's clearly the largest by default, but Boscage 4 is still mostly land. The natives don't use the ocean very much except for the high elves, so it has no official name. At the depths of this great ocean are horrors you can't even imagine, who warp the minds of all sentient creatures with their domination magic. At least that's what any survivors say when they come back ashore, their minds shattered into a thousand shards. It's not so much fear, but a lack of interest, since the natives are much more concerned with the green glowing rock economy than the marine economy, and with airships land travel is swift.

Type

Ocean