Question: is the krill a decomposer?
Answer: Phytoplankton or zooplankton (animal-like plankton) is eaten by small, shrimp-like animals called krill; small fish eat the krill; jellyfish eat the small fish; and finally, sea turtles eat the jellyfish. ... These decomposers feed on the decaying remains of surface plants and animals that slowly sink to the ocean floor.