What type of organisms serve as the producers at the bottom of the ocean?

At the bottom of the ocean, producers are primarily chemosynthetic bacteria and archaea. These organisms harness energy from chemical reactions, often involving hydrogen sulfide or methane, rather than sunlight, to produce organic compounds. They form the base of the deep-sea food web, supporting various organisms, including tube worms, clams, and other marine life that rely on them for energy and nutrients.