Bathymetry
An Oceanographer. Marine Biologist, that sort of thing.
It is the mid-ocean ridge.
That would be a marine biologist.
Aliens
It is the mid-ocean ridge.
The edges of the continental plates under water are called the continental shelf.
A scientist.
you call a scientist a scientist but there are different study's in science which are called different names i hope this helps.:)
Scientist call the seahorse a "Hippocampus"; a latin word
I call them "scientists" but their called oceanographers =D
A military scientist
A biotechnology scientist.