comatulid
Definition
- Noun:
- A free-swimming, stalkless crinoid (a marine animal related to starfish and sea urchins) characterized by having ten feathery arms. It is typically found living on muddy sea bottoms.
Usage Examples
- Noun:
- The diver observed a colorful comatulid clinging to the reef.
- Comatulids are also commonly known as feather stars.
Advanced Usage
- In marine biology, the term "comatulid" is used to distinguish the unstalked, free-moving crinoids from their stalked, sessile relatives, which are often called "sea lilies."
- The study focused on the locomotion and feeding behavior of the comatulid.
Variants and Related Words
- Feather star: This is the common name for a comatulid.
- The aquarium had a tank dedicated to feather stars and other echinoderms.
- Crinoid: The broader class of marine animals to which comatulids belong.
- Crinoids have existed for hundreds of millions of years.
Synonyms
- Feather star: The most common synonym.
- Stalkless crinoid: A descriptive synonym emphasizing the lack of a permanent stalk.
Related Terms
- Echinoderm: The phylum that includes comatulids, along with starfish, sea urchins, and sand dollars.
- As an echinoderm, the comatulid has a five-part radial symmetry.
Noun
-
free-swimming stalkless crinoid with ten feathery arms; found on muddy sea bottoms
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