Juergen Freund / Zebra / Adam's urchin crab with eggs (Zebrida adamsii) on Fire sea urchin (Mespilia globulus), Komodo NP, Indonesia, Indo-pacific.

Juergen Freund / Blue tuxedo / Splendid jewel box sea urchin (Mespilia globulus) well camouflaged with seagrass and other natural objects attached to it. Palawan, Philippines, Indo-pacific.

Georgette Douwma / Sea urchin (Mespilia globulus) has collected soft coral and Sea squirts, probably as camouflage. Rinca, Indonesia

GEORGETTE DOUWMA / Sea urchin (Mespilia globulus) Andaman Sea, Burma / Myanmar, Indian ocean

Georgette Douwma / Composite image of echinoderms on black background. Top row from left: Featherstar (Crinoidea), Sea apple (Pseudocolochirus violaceus). Central row from left: Mosaic cushion star (Halityle regu...