David Fleetham / Slender spongegoby (Phyllogobius platycephalops) and two Crabs of different species on Sponge. Several parasites with egg cases on the side of the Goby. Philippines.

Alex Mustard / Xeno crab (Xenocarcinus tuberculatus) climbs up a whip coral. Sangeang Island, Sumbawa, Indonesia. Flores Sea.

Juergen Freund / Tiny reef crab on a whip coral, Kimbe Bay, West New Britain, Papua New Guinea

Juergen Freund / Spider crab (Xenocarcinus tuberculatus) on whip coral. North Raja Ampat, West Papua, Indonesia

Juergen Freund / Spider crab / Mickey mouse crab {Xenocarcinus tuberculatus} camouflaged on whip coral, Indo Pacific

Chris Newbert / Xeno Crab (Xenocarcinus tuberculatus) on Wire Coral (Cirrhipathes sp) 70 feet deep, Papua New Guinea

Alex Mustard / Xeno crab (Xenocarcinus tuberculatus) on a Wire coral (Cirrhipathes sp.), Bitung, North Sulawesi, Indonesia, Molucca Sea.

Georgette Douwma / Wire coral crab (Xenocarcinus tuberculatus). Associates exclusively with black wire coraks. Lembeh Strait, North Sulawesi, Indonesia.