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Additional Information
Animaliaanimals
Identification
Location
Luzon Island, Philippines
Caption
The white projections from the arm stalks in this closeup view are called pinnules. This crinoid has its arms retracted. Though many may feed during daylight hours, crinoids normally are nocturnal, and commonly keep the arms in a retracted position during the day. The tiny cilia lining the pinnules are also retracted and not visible in this photo.
- Subject
- Live Animal
- Type
- Photo
- Life Stages And Gender
- Adult/Sexually Mature
Contributors
Jeffrey N. Jeffords (photographer; copyright holder; identification)
Conditions of Use
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
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Classification
- Kingdom Animalia animals
Related Taxa
- Unspecified Annelida segmented worms
- Class Aplacophora
- Unspecified Arthropoda arthropods
- Class Bivalvia
- Unspecified Brachiopoda lamp-shells
- Phylum Bryozoa moss animals
- Class Cephalopoda
- Unspecified Chaetognatha arrow worms
- Phylum Chordata chordates
- Phylum Cnidaria corals, sea anemones, jellyfish, and relatives
- Unspecified Ctenophora comb jellies
- Unspecified Cycliophora lobster symbionts
- Unspecified Echinodermata sea stars, sea urchins, sea cucumbers, and relatives
- Unspecified Entoprocta hairy back worms
- Class Gastropoda
- Unspecified Gastrotricha hairy back worms
- Phylum Kinorhyncha mud dragons
- Class Monoplacophora
- Phylum Nematoda roundworms
- Unspecified Nematomorpha horsehair worms
- Unspecified Nemertea ribbon worms
- Unspecified Onychophora velvet worms
- Unspecified Placozoa flat animals
- Unspecified Platyhelminthes flatworms
- Class Polyplacophora
- Unspecified Porifera sponges
- Unspecified Rotifera wheel or whirling animals
- Class Scaphopoda
- Unspecified Tardigrada water bears
To cite this page: Jeffords, J.2004. "Crinoid_closeup.jpg" (On-line), Animal Diversity Web. Accessed March 09, 2025 at https://animaldiversity.org/collections/contributors/jeffrey_jeffords/crinoids/Crinoid_closeup/
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This material is based upon work supported by the National Science Foundation Grants DRL 0089283, DRL 0628151, DUE 0633095, DRL 0918590, and DUE 1122742. Additional support has come from the Marisla Foundation, UM College of Literature, Science, and the Arts, Museum of Zoology, and Information and Technology Services.
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