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.
The Most Abundant Plankton Are The Ocean Bacteria. In the beginning this world was home only to ocean bacteria, they alone colonized and lived on this blue planet for billions of years before they built and rented the âWendy houseâ in the garden to the rest of us.