What is a marine producer?

A marine producer is an organism that can create its food from inorganic substances. Marine producers are at the base of the marine food chain and include phytoplankton, algae, and some bacteria. These organisms use photosynthesis to convert sunlight, carbon dioxide, and water into organic matter, which they then use for growth and energy. Marine producers provide the food and energy that all other marine organisms rely on, and they play a vital role in the functioning of the marine ecosystem.