colloid. 1  a solid, liquid, or gaseous substance made up of very small, insoluble particles (as single large molecules or masses of smaller molecules) that remain in suspension in a surrounding solid, liquid, or gaseous medium of different matter.
Nekton. Nekton are the animals that can move by themselves in the ocean waters. Nekton live in all zones of the ocean. However, just like benthos and plankton, most live in the sunlight zone or shallow twilight zone since there is the most sunlight and it is easy to feed on smaller organisms such as krill and minnows.
By Jennifer Kennedy. Pelagic Zone Background: The open ocean, or pelagic zone, is the area of the ocean outside of coastal areas, and where youâll find some of the biggest marine life species. The sea floor (demersal zone) is not included in the pelagic zone.Different Zones in the Open Ocean:y Jennifer Kennedy. Pelagic Zone Background: The open ocean, or pelagic zone, is the area of the ocean outside of coastal areas, and where youâll find some of the biggest marine life species. The sea floor (demersal zone) is not included in the pelagic zone.