Jul 28, 2017

Swell shark egg case, kstlzenbach, Flickr public domain

Swell shark egg case, commonly called a mermaid’s purse. Photograph courtesy of K. Stlzenbach, via Flickr.

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Swell shark egg case, commonly called a mermaid's purse. Photograph courtesy of K. Stlzenbach, via Flickr.

Swell shark egg case, commonly called a mermaid’s purse. Photograph courtesy of K. Stlzenbach, via Flickr.