Georgette Douwma / Crowned coral crab (Quadrella maculosa) on soft coral. Lembeh Strait, North Sulawesi, Indonesia.

Pascal Kobeh / Black coral crab (Quadrella maculosa) on a hard coral, coast of Dhofar and Hallaniyat islands, Oman. Arabian Sea.

Fred Bavendam / Black Coral Crab (Quadrella maculosa) portrait, underwater, Manado, North Sulawesi, Indonesia

Gary Bell/ Oceanwide / Black Coral Crab (Quadrella maculosa) on coral, Anilao, Philippines