They don't.
Orcas - Killer whales are toothed whales, and don't deliberately eat anything as small as plankton.
Whales are carnivorous.In a way, yes, because they eat masses of plankton.
Dolphins don't eat (much) krill because they don't have the anatomy for it. Krill are really tiny, and for something the size of a dolphin to be able to eat enough of it, an animal needs a way to filter the krill out of the water. And dolphin mouths just can't do that well enough.
no orcas does not eats algae
Orcas will eat seals, and seals are mammals.
no plankton do not eat plants
the answer is yes, they do eat plankton
Dolphins do eat plankton.
Orcas are predators, meat eaters. They'll eat whatever they can and like.
yes they can or tiger sharks eat baby orcas anyways
Plankton do not eat fish. This is because plankton are normally producers meaning they produce their own food. Normally fish eat plankton.
do frogs eat plankon
Corals eat plankton.