Hello student,

Although most zooplankton is tiny, some  are bigger and visible to the human eye.

Some examples include:- jelly fish , radiolarians, foraminiferans, and dinoflagellates, cnidarians, crustaceans, chordates, and molluscs.

Dear Aspirant,

Zooplankton (pictured below) are a type of heterotrophic plankton that range from microscopic organisms to large species (https://biologydictionary.net/species/) , such as jellyfish. Zooplankton are found within large bodies of water, including oceans and freshwater systems. Zooplankton are drifting ecologically important organisms that are an integral component of the food chain.

The most important types of zooplankton include the radiolarians, foraminiferans, and dinoflagellates, cnidarians, crustaceans, chordates, and molluscs.

Hope this helps.

Good Luck!