noun. animal constituent of plankton; mainly small crustaceans and fish larvae.
- animate being
Sentences with zooplankton
1. Noun, singular or mass
In the wild they eat zooplankton exclusively, which they pluck out of the water as they swim along.
2. Proper noun, singular
The animals seen as primary consumers include zooplankton, which is made up of the small larvae of larger fish that grow to become consumers at different levels of the food chain.