The seaweed and the algae and plankton is a producer it makes it un food. But the herring and the mussel and the crab and the limpet . The mussel is eat by the crab and the starfish. The starfish and the crab is eat by seagull. the is a.The crab and the herring is eat by the seal to. The dolphin herring. The shark eats ave thing that it can eat and the shark is a predator which mens to a shark eats pray.