Alex Mustard / Sleepy sponge crab (Dromia dormia) climbing over a rock, carrying its sea squirt (Didemnum molle) disguise, with brittlestar. Anilao, Batangas marine protected area, Luzon, Philippines. Verde Island P...

Alex Mustard / Sponge crab (Dromia dromia) carrying a purple sponge on its back, has climbed on a pinky-orange sponge to feed at night. Baa Atoll, Maldives.