Hadalpelagic zone - any depth deeper than 6000 m. 4. The ocean can also be divided by depth of light penetration. From 100 to 200 m. aphotic zone - No light 5. An organism's name consists of the genus name combined with a trivial name. Monera are the bacteria and blue-green algae.
Bacteria are important for decomposition and release of nutrients.
They are important for converting ammonia and nitrogen into nitrates and nitrites. Protista are single-celled organisms with a nucleus. This kingdom includes plants and animals such as the foraminifera, coccoliths, diatoms, and radiolarians. These groups are responsible for most deep sea oozes. Fungi are abundant in the intertidal zone and are important in decomposition.