porcupinefish - swim bladder
porcupinefish - swim bladder

This object was found on Main Beach. When dry it has the look and feel of plastic, when fresh it had a slightly leathery texture. It is very buoyant and about 7cms long. It is the swim bladder of a porcupine fish. Most fish have swim bladders but they are much less robust than those of porcupine fish and so are seen much less often.

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