Regal thorny oyster shell. Illustration of the shell of the regal thorny oyster (Spondylus regius), a species of saltwater clam (not a true oyster). S

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Regal thorny oyster shell. Illustration of the shell of the regal thorny oyster (Spondylus regius), a species of saltwater clam (not a true oyster). Shells of bivalve molluscs such as clams consist of two articulating parts, or valves. The two halves of the shells of species in this genus are joined with a ball-and-socket type of hinge.

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Size: 4832px × 3653px
Photo credit: © SMITHSONIAN INSTITUTION/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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