Talking about the food chain

Benthic organisms in the food chain are at different levels of nutrition. Benthic plants are producers and are at the first level of the food chain. Phytophagous benthos, some (such as algae shrimp, feeding on macroalgae; Some (such as bivalves, phytoplankton or organic debris) feed on food and are in the second layer of the food chain. Many carnivorous benthic species (such as snails and many shrimps, zooplankton and benthos) feed on it and belong to the third level of the food chain. Some benthos are the objects of human consumption (such as economic shrimp), and some species (such as shrimp and Daphnia) are the objects of fish and other animals. Quantitative change of benthos and its relationship with productivity and resources of marine organisms.