View of <a href="https://en.wikipedia.org/wiki/pedicellaria" class="extiw" title="en:pedicellaria">Pedicellaria</a> of the starfish <a href="https://en.wikipedia.org/wiki/Acanthaster_Planci" class="extiw" title="en:Acanthaster Planci">Acanthaster Planci</a> at  <a href="https://en.wikipedia.org/wiki/R%C3%A9union" class="extiw" title="w:Réunion">Réunion</a> Island. The red spots are retracted respiratory papules.
Philippe Bourjon
CC BY 3.0
The uploader on Wikimedia Commons received this from the author/copyright holder.