spirula
Definition
Noun: 1. A small deep-sea cephalopod: A marine mollusk of the genus Spirula, which is a small, tropical, deep-water squid-like animal. It is notable for its internal, many-chambered, coiled shell that is buoyant and often washes ashore.
Examples of Usage
- Noun:
- The spirula is a fascinating cephalopod that lives in the ocean's twilight zone.
- The coiled, chambered shell of the spirula is a common find on some tropical beaches.
- Unlike most squids, the spirula has a buoyant internal shell.
Advanced Usage
- Scientific context: The term is used almost exclusively in zoological and marine biological contexts to refer to the specific organism , which is the only extant species in its genus and family.
- The study focused on the unique buoyancy mechanism of the spirula.
Variants and Related Words
- Spirula shell (noun phrase): The distinct, white, chambered, flat-spiraled internal shell of the spirula, also known as a "ram's horn shell."
- She collected a beautiful spirula shell on the beach.
Synonyms
- Ram's horn squid: A common name for the spirula, derived from the shape of its internal shell.
- Little post horn squid: Another common name.
Related Terms (Scientific Classification)
- Cephalopod: The larger class of mollusks that includes squids, octopuses, cuttlefish, and the spirula.
- Decapod: The order of cephalopods having ten arms, which includes the spirula, squids, and cuttlefish.
Noun
-
a small tropical cephalopod of the genus Spirula having prominent eyes and short arms and a many-chambered shell coiled in a flat spiral
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