Once hydrothermal vents were found, scientists wanted to learn how the organisms that lived near the vents interacted with each other. Bacteria-like organisms called Archaea are the producers who sustain a dynamic and diverse community. Of course, only animals live in this community. No plants exist at all because there is no sunlight.
Coloring is unusual here.
Tubeworms have red plumes because the hemoglobin of their blood, clams absorb chemicals from the water and hence their yellow shells, but most of the creatures of the vent communities are a ghostly white. Each vent differs in the number and type of creatures found there, but a typical makeup might be as follows. 1.Symbiotic bacteria, which produce sugars though chemosynthesis, live within tubeworms and mollusks and provide them a food source. 2.Fish, crab, shrimp, and octopus prey on tubeworms, mollusks, and each other for their food. Just like in terrestrial ecosystems, there is a succession of sorts.