Isognomon perna explained

Isognomon perna, the brown purse shell or rayed tree oyster, is a bivalve in the family Isognomonidae common in the Indo-Pacific including Hawaii.^{[1] [2]}

Description

Isognoma perna colors range from a brown or light-yellow purse shell to beige with a brown striped pattern and resembles a miniature clam.^[3]

Distribution

Commonly found in the Indo-Pacific, including Hawaii, Western Polynesia, Eastern Polynesia, North to Japan Eastern to Southern Africa, New Caledonia, and Society Islands.^{[4] [5]}

Habitat

Isognomon perna live at depths of 0-20m in tropical climates; byssally attach to rocks, reef flats, or the underside of boulders. Commonly found under rocks in shallow water and arranged one on top of the other.^[6]

Notes and References

1. MolluscaBase. 2023. Isognomon perna (Linnaeus, 1767). 208470. 11 January 2023.
2. Web site: Brown Purse Shell, Isognomon perna . 2023-01-11 . www.marinelifephotography.com.
3. Web site: Isognomon perna . 2023-06-27 . OPIHI . en-US.
4. Web site: Isognomon perna, Rayed tree oyster . 2023-06-27 . www.sealifebase.se.
5. Web site: Isognomon perna (Linnaeus, 1767) - Brown purse oyster / shell (Marine bivalve images) . 2023-06-27 . www.aphotomarine.com.
6. Book: Hoover, John . Hawai'i's Sea Creatures. A guide to Hawai'i's Marine Invertebrates. . 2006 . Mutual Pub. . 1-56647-220-2.