Jellyfish, turtles, dolphins, crab, octopus, sharks, squid, fish, plankton, seaweed, shrimp, starfish, and whales
would be in this ecosystem
Water, Salt, Sunlight, Air, Shells, Sand, Rocks
There would be plenty of sunlight in the Ocean
The herbivores in the Ocean Ecosystem would be: Zooplankton, Sea Turtle, Manatees, Dungongs, Parrot Fish
The carnivores in the Ocean Ecosystem would be: Blue whales, Sea Lions, Dolphins, Sharks
Decomposers in the ocean would be fungi
Decomposers are vital to the ocean ecosystem because they produce nutrients to the producers in the ecosystem if there wasn't any decomposers there wouldn't be any phosphorus, nitrogen or potassium in the ocean.
I got information from Bright Hub.