<Mines and castles and asylums and even graveyards are played out. Space is unknown, but it's a void of nothing. It only gets scary if there IS something. With the Forest, you don't know all. Many killers like to hide in the forests at night. Many criminals get away in the middle of the night. You don't truly know what you'll encounter. But the sea... that's something different. No forest gets as dark as the sea. The ocean gets pitch black. You don't see a damn thing besides the bio-luminescent lifeforms... and even that's not the full story. 5%, only 5% of the god damned ocean has been discovered apparently. If that's the case, there's no telling what -blam!-ing abomination you'll find.>