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

Juergen Freund / Flagtail shrimp goby (Amblyeleotris yanoi) and shrimp (Alpheus randalli), Bali, 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

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