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.
Confidence votes 19. Most plankton, known as phytoplankton, (but not all) eat in much the same way as do plants-through photosynthesis, the process by which sunlight is converted into food energy. More. Planktonic animals mostly eat other plankton, incluing the planktonic plants described above, and smaller animals which are also plankton. The smallest of the plankton can eat bacteria and detritus, but the largest of the plankton are true predators.