A galatheid crab, hiding in a sponge.

A galatheid crab, hiding in a sponge, seems highly conspicuous until you remember that his red coloration is visible only under the submersible's white lights. In the dim blue light, where he lives, the crab's red pigmentation would appear grayish black. Image courtesy of Edith Widder/HBOI, NOAA-OE

Related Links

Deep Scope 2004

Deep Scope: Deep Light

NOAA Ocean Explorer Gallery