What does zoea mean?
In zoology, a zoea is an early, usually free-swimming larva of a decapod crustacean, especially a crab. After hatching, a young crab passes through a zoea stage while its limbs, body shape, and swimming apparatus develop; in some groups it then enters a distinct later larval phase, such as the megalopa of true crabs. The word is primarily technical, so readers encounter it in marine biology, fisheries science, and descriptions of crustacean development rather than everyday conversation. Although “larva” is a broader, familiar term, a zoea identifies a particular early developmental form. Its unfamiliar name, derived from Greek zōē, meaning “life,” also makes it memorable. A zoea is therefore not a separate adult animal but a temporary stage in the complex life history of crabs, shrimp, and their relatives.
nounAn early, usually free-swimming larval form of a decapod crustacean, especially a crab, occurring after hatching and before later larval development.
- An early larval form of a decapod crustacean, especially a crab, occurring after hatching and before later larval development.
"Researchers photographed a zoea before it molted into the next stage of its development."
"A newly hatched crab begins life as a zoea."
"The plankton tow collected hundreds of zoeae from the bay."
The conventional plural in zoological usage is zoeae.
"Several zoeae were captured in the plankton net."
Before a crab is a crab, it may spend its early days as a zoea—a tiny swimmer with a remarkably unfamiliar name.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of zoea
The modern term was formed in New Latin from Greek zōē, meaning “life,” and was adopted in zoological terminology for the larval form of decapod crustaceans. The same Greek root underlies English words including zoetic, zoology, and zoogamy, although modern usage of zoea is highly specialized.
Related word forms
How zoea is actually used
This is specialized zoological terminology, chiefly encountered in marine biology, fisheries science, and descriptions of crustacean development. It is more precise than the general term larva because it identifies a particular early crustacean stage.
Easily confused with zoea
A zoea is a crustacean larva, whereas a zoe is a female animal.