Fred Bavendam / Goby (Amblyeleotris sp) keeping watch while a Snapping Shrimp (Alpheus randalli) excavates their shared burrow, Bali, Indonesia

Fred Bavendam / Brown Snapping Shrimp (Alpheus armatus) on coral, Bonaire, Netherland Antilles, Caribbean

David Hall / Yellow prawn-goby (Cryptocentrus cinctus) and Snapping shrimp (Alpheus sp). Mutualistic symbiosis with goby as watchdog and shrimp maintaining burrow. Komodo, Indonesia.

David Hall / Arcfin shrimpgoby (Amblyeleotris arcupinna) and Snapping shrimp (Alpheus sp), blind shrimp maintaining contact with goby via antenna. Mutualism with shrimp maintaining burrow and goby acting as lookou...

David Fleetham / Steinitz' prawn / shrimp goby (Amblyeleotris steinitzi) and Alpheid worker shrimp (Alpheus sp) side by side. Mutualism occurs between the two species, the blind shrimp maintaining the shared burro...

David Fleetham / Yellow Shrimp / Banded Prawn Goby (Cryptocentrus cinctus) lives with this blind snapping shrimp (Alpheus sp.) who is excavating their den. As pictured here, the shrimp always keeps an antennae touchin...

Constantinos Petrinos / Mosaic-fin Shrimp Goby (Flabelligobius sp.) living in association with Red Banded Alpheid Shrimp (Alpheus randalli) Lembeh Strait, North Sulawesi, Indonesia.

Tony Wu / Snapping shrimp (Alpheus frontalis) infected with a Rhizocephalan parasite, possibly (Thompsonia sp.) Lembeh Strait, North Sulawesi, Indonesia.

Franco Banfi / Banded shrimpgoby (Cryptocentrus cinctus) sharing burrow with Alpheus shrimp (Apheus sp) Cendana Jetty, Waigeo island, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Juergen Freund / Banded shrimp goby (Cryptocentrus cinctus) yellow morph with snapping shrimp partner (Alpheus sp.) Papua New Guinea.

Fred Bavendam / Filament Dartfish (Ptereleotris hanae) emerging from the burrow of Steinitz' Shrimp Goby (Amblyeleotris steinitzi) and Snapping Shrimp (Alpheus sp), Bali, Indonesia

Fred Bavendam / Barred Shrimp Goby (Cryptocentrus fasciatus) sharing a burrow with a Snapping Shrimp (Alpheus djiboutensis), Lembeh Strait, Indonesia

Fred Bavendam / Yellow Shrimp Goby (Cryptocentrus cinctus) sharing a burrow with a Snapping Shrimp (Alpheus sp), Menjangan Island, Indonesia

Fred Bavendam / Yasha Hase Shrimp Goby (Stonogobiops yasha) sharing a burrow with a Randall's Shrimp (Alpheus randalli), Coral Sea, Australia

Fred Bavendam / Black-rayed Shrimpgoby (Stonogobiops nematodes) pair sharing a burrow with a Randall's Shrimp (Alpheus randalli), Bali, Indonesia

Fred Bavendam / Metallic Shrimp-goby (Amblyeleotris latifasciata) keeps watch while its Snapping Shrimp (Alpheus sp) partner works on their burrow, Bali, Indonesia

Fred Bavendam / Snapping Shrimp (Alpheus sp), Edithburgh, Australia

Fred Bavendam / Pistol Shrimp (Alpheus bidens), Edithburgh, Australia

Doug Perrine / Randall's shrimp goby {Amblyeleotris randalli} shares burrow with blind Shrimp {Alpheus sp} which it provides protection to, symbiosis, Kimbe Bay, Papua New Guinea

Fred Bavendam / Spotted Prawn Goby (Amblyeleotris guttata) sharing a burrow with a Find-striped Snapping Shrimp (Alpheus ochrostriatus), Bali, Indonesia

Fred Bavendam / Metallic Shrimp-goby (Amblyeleotris latifasciata) keeping watch while a Snapping Shrimp (Alpheus sp) works on their shared burrow, Bali, Indonesia

Gary Bell/ Oceanwide / Candy-stripe Pistol Shrimp (Alpheus astrinx), Yorke Peninsula, South Australia, Australia