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  2. Marine food web - Wikipedia

    en.wikipedia.org/wiki/Marine_food_web

    Phytoplankton are then consumed at the next trophic level in the food chain by microscopic animals called zooplankton. Zooplankton constitute the second trophic level in the food chain, and include microscopic one-celled organisms called protozoa as well as small crustaceans, such as copepods and krill, and the larva of fish, squid, lobsters ...

  3. Krill - Wikipedia

    en.wikipedia.org/wiki/Krill

    The name "krill" comes from the Norwegian word krill, meaning "small fry of fish", [3] which is also often attributed to species of fish. Krill are considered an important trophic level connection near the bottom of the food chain. They feed on phytoplankton and, to a lesser extent, zooplankton, and are also the main source of food for many ...

  4. Planktivore - Wikipedia

    en.wikipedia.org/wiki/Planktivore

    A planktivore is an aquatic organism that feeds on planktonic food, including zooplankton and phytoplankton. [1] [2] Planktivorous organisms encompass a range of some of the planet's smallest to largest multicellular animals in both the present day and in the past billion years; basking sharks and copepods are just two examples of giant and microscopic organisms that feed upon plankton.

  5. Biomass (ecology) - Wikipedia

    en.wikipedia.org/wiki/Biomass_(ecology)

    Baleen whales can consume zooplankton and krill directly, leading to a food chain with only three or four trophic levels. Marine environments can have inverted biomass pyramids. In particular, the biomass of consumers (copepods, krill, shrimp, forage fish) is larger than the biomass of primary producers.

  6. Plankton - Wikipedia

    en.wikipedia.org/wiki/Plankton

    Fish eggs cannot swim at all, and are unambiguously planktonic. Early stage larvae swim poorly, but later stage larvae swim better and cease to be planktonic as they grow into juveniles. Fish larvae are part of the zooplankton that eat smaller plankton, while fish eggs carry their food supply. Both eggs and larvae are themselves eaten by larger ...

  7. Food web - Wikipedia

    en.wikipedia.org/wiki/Food_web

    A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.

  8. Filter feeder - Wikipedia

    en.wikipedia.org/wiki/Filter_feeder

    Krill feeding in a high phytoplankton concentration (slowed by a factor of 12). Filter feeders are aquatic animals that acquire nutrients by feeding on organic matters, food particles or smaller organisms (bacteria, microalgae and zooplanktons) suspended in water, typically by having the water pass over or through a specialized filtering organ that sieves out and/or traps solids.

  9. Neritic zone - Wikipedia

    en.wikipedia.org/wiki/Neritic_zone

    The result is high primary production by photosynthetic life such as phytoplankton and floating sargassum; zooplankton, free-floating creatures ranging from microscopic foraminiferans to small fish and shrimp, feed on the phytoplankton (and one another); both trophic levels in turn form the base of the food chain (or, more properly, web) that ...