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 / Translucent goby (Bryaninops erythrops) rests on sponge (Pione vastifica) covered in spionid worms (Polydorella smurovi) Nuweiba, Sinai, Egypt. Gulf of Aqaba, Red Sea.

Alex Mustard / Translucent goby (Bryaninops erythrops) on red sponge (Pione sp.) Sinai, Egypt. Red Sea.

Michele Westmorland / Dwarf goby (Bryaninops sp) on Ianthella sponge, Papua New Guinea

Michele Westmorland / Dwarf goby (Bryaninops sp) on Ianthella sponge, Papua New Guinea

Claudio Contreras / Goby (Elacatinus sp.) on sponge, Guanahacabibes Peninsula National Park, Pinar del Rio Province, western Cuba.