Is phytoplankton a herbivore?
Plankton is not a herbivore, nor any type of consumer. Plankton is a photosynthetic autotroph; an autotroph being an organism that synthesizes its required organic compounds either through photosynthesis or inorganic chemosynthesis. Other autotrophs include plants, algae and some bacteria.
Conversely, consumers, such as herbivores, carnivores, omnivores and detrivores, are known collectively as heterotrophs, meaning that they must derive their required compounds from the consumption of other preexisting organic compounds.
phytoplankton, green sea turtle ,manatees and dugong Phytoplankton are not herbivores. They get their energy through photosynthesis. Some radiolaria and foraminifera are herbivores for they eat the algae that produce sugars by photosynthesis. And many other plankton are also herbivorous while their associates are carnivorous, omnivorous or are detritovores. Google will help in listing these microscopic herbivores. Several phyla are involved. Read more: http://wiki.answers.com/Q/What_herbivores_live_in_the_ocean#ixzz1cKF5CP00