Atergatis floridus (Linne, 1767)

A highly toxic species..Juvenile below?

This animal's shell is covered with 2 species of barnacles, and serpulid worm tubes.
The orange barnacles on the underside are in the family Heteralipadidae, possibly
Paralepas quadrata.
This is an Epizoic species on crabs and lobsters. Epizoic is
defined as living or growing on the external surface of an animal.

© All images Copyright 2021 Denis Riek. All rights reserved.