You apparently would know much more about the underwater geography...and I took a look, it sure does seem like it would be somewhere subs would go.
I read somewhere that if you wanted to visualize the part of an ocean that submarines made for warfare (not deep see diving vessels) can access, stand in a room with an eight foot high ceiling, think of floor to ceiling as the depth, and submarines can access a matchstick’s length from the ceiling.
Subs like to stay under tropical depressions the bastards.
“and submarines can access a matchstick’s length from the ceiling.”
No, they can go all the way to the bottom.