noun
- plural of nautilus; marine mollusks with spiral shells and tentacles, found in tropical waters
Usage: zoology
Examples
- The aquarium’s new exhibit features several live nautiluses.
- Nautiluses are considered living fossils because they have remained largely unchanged for millions of years.
- The researcher studied the swimming patterns of nautiluses in their natural habitat.
- Ancient nautiluses left behind fossilized shells that scientists use to study prehistoric oceans.
- Unlike octopuses, nautiluses have external shells that protect their soft bodies.
- The nautiluses at the marine center are fed small fish and crustaceans.