Pictures taken under magnification in the lab. Recovered along with Exaiptasia diaphana (Aiptasia) anemones from ~50 cm depth on the Kaneohe Sandbar.
Black oblong sea urchin observed under a rock in a tide pool at the Nāpo'opo'o Beach Park in the Kealakekua Bay MLCD, Honaunau, Hawai‘i, USA