Short spiny urchin question

[digitalsteve]

the suckers themselves area called pedacellaria sp.

[justinl]

no the suckers are called tube feet.

"...tube feet, which are sucker-like appendages that the echinoderm can use to move, grip the substrate, or manipulate objects. These tube feet are extended and retracted by hydraulic pressure in the water-vascular system. Pedicellaria are small, snapper-like skeletal elements that are used by the echinoderm to keep small organisms from settling on its body." -UCMP