I believe it would depend on the type of plankton eaten. Eating phytoplankton would probably be equivalent to eating plants, and would make the eater either herbivorous or omnivorous. Zooplankton would probably be the equivalent of eating meats, and would make the consumer either omnivorous or carnivorous.
A manta ray is a carnivore, being a filter feeder and eating large quantities of zooplankton. But, as the plankton they feed on include zooplanton (animals) and phytoplankton ("the plants of the sea"), you could say they are unintentionally omnivores, as they have no control as to what plankton is swept into their gaping mouths.
Anchovy eat mostly plankton and hatched fish. So, it is an omnivore because plankton can include animal and plant matter that float in water.
A herring is not an omnivore. It is a carnivore because its diet consists of smaller fishes, eggs and plankton.
Mussels are omnivores. They eat something such as a heron wich is a bird. I hope i helped. ( Im a 5th grader by the way ) im smarter then you guys who asked this question. : )
the decorator crab eats plankton and flesh of other animals.
herbarvore
It eats plankton, and meat, so it is an omnivore.
They are omnivores and detrivores: they eat phytoplankton (plants), other plankton, and biological waste.
herbarvore
herbarvore
herbarvore
It's not a carnivore. It's a filter feeder, it eats plankton, that mix of plants and animals that live near the surface of the oceans ... so I suppose you could call it an omnivore.
it is a omnivore depending what type
A manta ray is a carnivore, being a filter feeder and eating large quantities of zooplankton. But, as the plankton they feed on include zooplanton (animals) and phytoplankton ("the plants of the sea"), you could say they are unintentionally omnivores, as they have no control as to what plankton is swept into their gaping mouths.
Carnivore because it eats krill and plankton.
Anchovy eat mostly plankton and hatched fish. So, it is an omnivore because plankton can include animal and plant matter that float in water.
Most if not all jellyfish are carnivorous.Jellyfish are carnivorous, eating plankton, crustaceans, fish eggs, small fish and other jellyfish.