biology imaging notes

The penis worm

Luckily enough, the magnificent “penis worm” has no penis #priapulida

The penis worm (Priapulida).
Adult specimen of the priapulid Priapulus caudatus collected in Sweden.
biology notes

Priapulid sticker

Penis-worm sticker

The first penis-worm sticker of mankind. Thanks, Casey! I uploaded the source file to PhyloPic.