In the marine biological community, starting from plants, bacteria or organic matter, passing through plant-eating animals to carnivorous animals at all levels, a nutritional relationship between the feeders is formed in sequence. This nutritional relationship is called a food chain, also known as a "trophic chain" ". A food web is the expansion and complexity of a food chain. The conversion and flow of matter and energy through various links in the marine food chain and food web is a basic process of material circulation and energy flow in the marine ecosystem.
Big fish eat small fish, small fish eat small shrimps
The structure of the food chain is somewhat like a pyramid, with a large base and a much smaller size with each upper level: the first level is composed of an astonishing amount of marine phytoplankton and is the most basic part of the food chain pyramid, producing carbohydrates and oxygen through photosynthesis. , is the material basis for the growth of marine organisms; the second level of the food chain is marine zooplankton, which feed on marine phytoplankton; the third level is marine animals that feed on zooplankton; and the fourth level is carnivorous animals in the ocean such as tuna , sharks, etc., they are at the highest level of the pyramid.
Schematic diagram of marine food chain
The pyramid that makes up ocean biomass
