An Australian free diver has social media in stitches after sharing a pic of a bizarre penis-shaped creature on Facebook. Of course, priapulida ain't the only phallic fish in the sea. Last year ...

Nothing else in the ocean quite compares to the penis worm.At least until now. Researchers from Yunnan University and Durham University studying ancient forms of priapulida, or penis worms, found ...

The largest Priapulida species grow to around 16 inches (40 centimeters) long, according to a 2013 study published in Zoologischer Anzeiger - A Journal of Comparative Zoology.

Priapulida are said to be sometimes referred to as 'penis worms' after the scientists who first discovered them noticed a similarity. Josie is a keen freediver (Image: Jam Press/@sharejosie ) ...

A close-up of the fascinating priapulida (Picture: @sharejosie / Jam Press) ‘I have cleaned this beach for 10 years and so I’ve seen the difference cleaning has made to the water,’ she said.