Detritivores: These are organisms that feed on dead and decaying organic matter (detritus). Earthworms: They are classic detritivores, breaking down organic matter in soil and aiding in decomposition. Millipedes: They feed on decaying leaves and other organic debris on the forest floor. Woodlice: These small crustaceans are also detritivores, consuming decaying plant and animal matter. Jellyfish: While they might incidentally ingest some detritus while filtering water for food, they are primarily carnivores, feeding on plankton and small fish. Seahorses: These are also not detritivores. They are carnivores, feeding on small shrimp, plankton, and other invertebrates. Therefore, 1,3 and 5 are detritivores.