GEOLOGY

Detailed explanation-1: -There are two main types of plankton: phytoplankton, which are plants, and zooplankton, which are animals. Zooplankton and other small marine creatures eat phytoplankton and then become food for fish, crustaceans, and other larger species.

Detailed explanation-2: -Scientists classify plankton in several ways, including by size, type, and how long they spend drifting. But the most basic categories divide plankton into two groups: phytoplankton (plants) and zooplankton (animals).

Detailed explanation-3: -As mentioned above, plankton are categorized into two main types: the phytoplankton and the zooplankton. As phytoplankton produce their own food, zooplankton rely on them to thrive. Swarms of these tiny animal plankton eat phytoplankton, just like how most smaller land animals feed on plants on land.

Detailed explanation-4: -All other life in the ocean needs phytoplankton to survive. Phytoplankton get their energy directly from the sun using photosynthesis, just like plants. Zooplankton then feed on phytoplankton, and are then eaten by larger zooplankton, fish, larger fish, and so on.