Is this why you won't go to the deep, @premeemohamed.com ?
Let's talk about the bristlemouths, 13 species of bioluminescent deep-dwelling ocean fish in genus Cyclothone. There are a lot of them. Like, a lot. Specifically, our best guess is there are a million billion (1E15) bristlemouths on Earth. Making them the most populous vertebrate on the planet.