Pelagic birds feed on planktonic crustaceans, squid and forage fish. They are composed of filamentous free-living fungi and yeasts associated with planktonic particles or phytoplankton. Wild brine shrimp eat microscopic planktonic algae. The flapjack preys on small fishes and planktonic crustaceans. Asexual reproduction in the planktonic larvae occurs through numerous modes. Rotifers may be in competition with cladocera and copepods for planktonic food sources. Bryde's whales feed on a wide variety of fish, planktonic crustaceans, and cephalopods. They can occur as planktonic cells or form phototrophic biofilms. Ghost crabs lay their eggs in the sea, which develop into planktonic marine larvae. Their results indicated that they feed on various planktonic organisms, but especially microscopic jellyfish. The young hatch from their eggs into planktonic larvae. The eggs become fertilized in the water and develop rapidly into planktonic larvae. These sediments accumulate on the ocean floor within areas characterized by little planktonic production. It reaches up to in length and mostly feeds on planktonic crustaceans. About 600 species of planktonic algae are known in the Sea of Azov.