Streptopinna is an Indo-Pacific genus of bivalve molluscs characterized by a roughly triangular outline. There is only one species Streptopinna saccata.
| Streptopinna | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Pteriida |
| Family: | Pinnidae |
| Genus: | Streptopinna von Martens, 1850 |
| Species: | S. saccata
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| Binomial name | |
| Streptopinna saccata | |
Description edit
No two 'Baggy Pen Shells' are alike: they grow into unexpected shapes, conforming to the shape and position of other hard structures (rocks,
coral skeletons, empty shells) in their immediate environment.
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Distribution edit
Warm waters of the tropical Indian and western Pacific oceans.
Habitat edit
Buried in sandy bottoms.
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