Hitcher

[Carp890]

Hi ha ,just noticed my urchin has picked up a zoa bud, nice hat. Do I remove it ?? Any help appreciated 

[seabass]

Tuxedo urchins like to camouflage themselves with coral frags, shell fragments, or basically anything they can carry.  Sometimes it becomes annoying.

 

You can remove the polyp if you wish (and glue it back onto the rock), or just let go.  I would guess that the urchin's constant movement will likely irritate the zoanthid polyp enough that it will eventually close.