Notes: Pink to yellowish, rounded masses, reminiscent of baby butts. Stony hard owing to its calcareous basal skeleton, which makes it a sclerosponge. Spicules are acanthostyles, curved, 120-310 µm. Found in mid depth (15 m) and deeper reef crevices.

Author Reference: (Hickson, 1911)

Link: World Porifera Database