Benthos The organisms that live on the bottom sediments of freshwater and marine ecosystems. They include plants and algae (phytobenthos) that grow below low tide mark.
This is because under the surface is a dark and hostile environment with unrelenting high pressure, freezing temperatures and bizarre creatures in the depths.
Some deep-sea creatures flourish around undersea geysers or hydrothermal vents, which erupt in streams of mineral-rich seawater, warmed by magma deep in the Earth's crust.
So, it eats all kinds of organisms on the sea floor from shellfish to sea urchins moving their little tiny feet underneath to glide across the sea floor, and then strike fear into organisms that they encounter.