Tiny aquatic animals eaten by fish.

Small, usually microscopic animals (such as protozoans), found in lakes and reservoirs.

Small heterotrophic organisms found inhabiting aquatic ecosystems. Also see plankton and phytoplankton.

Small animals that live in and move with the ocean’s currents

1901, from zoo- "animal" + plankton.

microscopic, heterotrophic organism that lives in the ocean.

Tiny, free-floating organisms in aquatic systems. Unlike phytoplankton, zooplankton cannot produce their own food, and so are consumers.

plankton that do not produce their own food, as phytoplankton do. In size they fall between phytoplankton and larger organisms like fish.

animal species of plankton.

small or microscopic animals that float or drift in great numbers in fresh or salt water near the surface and are the base of the ocean food chain.

small, sometimes microscopic animals that drift in the ocean. It includes protozoa, crustaceans, jellyfish and other invertebrates that drift at various depths in the water column. Compare with phytop [..]

a community of invertebrate organisms inhabiting the water mass, usually feeding on bacteria, phytoplankton and/or detritus.

Small, sometimes microscopic animals that live suspended in the water column.

Animals (mostly microscopic) that drift freely in the water column.

biology - free floating microscopic aquatic animals

The animal forms of plankton. They consume phytoplankton or other zooplankton.

(n) animal constituent of plankton; mainly small crustaceans and fish larvae

Microscopic animals, such as crustaceans and fish larvae, that drift in the water column.

The animal constituent of plankton consisting mainly of small crustaceans and fish larvae and including some gelatinous groups. They are passively floating, drifting, or somewhat motile organisms occu [..]

The animal constituent of plankton.

A diverse group of animals that live all or part of their life as plankton, suspended and drifting in the water. Some zooplankton are the larvae (young) of animals such as lobsters, crabs, clams, sea [..]

animal constituent of plankton; mainly small crustaceans and fish larvae. (Compare to phytoplankton.)

Zooplankton is the type of plankton that consumes (or grazes) phytoplankton.

The animal component of the plankton; animals suspended or drifting in the water column including larvae of many fish and benthic invertebrates

The microscopic drifting animal life of the oceans including the larvae of the larger swimming animals and fish.

The animal component of the plankton; animals suspended or drifting in the water column including larvae of many fish and benthic invertebrates

Small (often microscopic) aquatic animals that are suspended or swimming in water.

Planktonic marine animals. See the SAHFOS Marine Climate Change Encyclopaedia at www.sahfos.org/Climate Encyclopaedia/index2.html

Small aquatic animals that are suspended or swimming in water. Amall protozoa, crustaceans (such as krill), etc.

The heterotrophic, animal component of plankton

Small, usually microscopic animals(such as protozoans), found in lakes and reservoirs.

Minute free-floating Animal organisms which live in practically all natural waters.

Minute free-floating animal organisms which live in practically all natural waters.

Small or microscopic organisms found in water that drift or have limited ability to swim. Zooplankton include copepods, krill (eupausiids), and larval fish and squid.

Animal plankton. Small herbivores that float or drift near the surface of aquatic systems and that feed on plant plankton (phytoplankton and nanoplankton).

Animal plankton, including single-celled animals, juvenile stages of many marine and shore animals, and larger animals such as jellyfish, etc. See phytoplankton.

Planktonic animals that float in the water and range in size from single-celled protozoa to comb jellies. Zooplankton feed on detritus, phytoplankton and other zooplankton. They are eaten by fish, she [..]

Small heterotrophic organisms found inhabiting aquatic ecosystems. Also see plankton and phytoplankton

tiny aquatic animals eaten by fish.

Animal component of small aquatic organisms that mainly drift with water movements. They include protozoans, small crustaceans, and in early summer, the larval stages of many larger organisms.

Minute aquatic animals that eat phytoplankton and each other.

microscopic animal organisms that drift in bodies of water worldwide; represent a basic level of feeding relationships

The floating and swimming small animals and protozoa found in marine environments, often in association with phytoplankton.

The tiny animals of the plankton.

Tiny animals that occur in the water column of lakes and oceans.

Zooplankton (, ) are heterotrophic (sometimes detritivorous) plankton (cf. phytoplankton). Plankton are organisms drifting in oceans, seas, and bodies of fresh water. The word zooplankton is derived f [..]

[Gk. zoe, life + plankton, wanderer] A collective term for the nonphotosynthetic organisms present in plankton.

Animal members of the plankton