David Fleetham / Anemone shrimp (Thor amboinensis) on Giant sea anemone (Condylactis gigantea), Bonaire, the Netherlands Antilles, Caribbean.

Franco Banfi / Giant Caribbean sea anemone (Condylactis gigantea) with Spotted cleaner shrimp (Periclimenes yucatanicus) Santa Lucia, Camaguey, Cuba. Caribbean Sea, Atlantic Ocean

Claudio Contreras / Giant anemone (Condylactis gigantea) Cozumel Reefs National Park, Cozumel Island, Caribbean Sea, Mexico, January

Constantinos Petrinos / Golden anemone (Condylactis aurantiaca) Athens, Attica Region, Greece, Saronic Gulf, Aegean Sea. August.

Solvin Zankl / Golden Anemone (Condylactis aurantiaca) San Pietro Island, Sardinia, Italy, Mediterranean, July

Christian Ziegler / Giant Caribbean Anemone (Condylactis gigantea) growing on the shallow bay bottom between mangrove roots, Bastimentos Marine National Park, Bocas del Toro, Panama

Pete Oxford / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on Giant Caribbean Anemone (Condylactis gigantea), Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Giant Caribbean Anemone (Condylactis gigantea), Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Giant Caribbean Anemone (Condylactis gigantea) pair with coral on reef, Belize Barrier Reef, Belize

Pete Oxford / Giant Caribbean Anemone (Condylactis gigantea), Belize Barrier Reef, Belize

Luciano Candisani / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on Giant Caribbean Anemone (Condylactis gigantea), Santa Barbara Island, Abrolhos Islands, Bahia, Brazil

Luciano Candisani / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on Giant Caribbean Anemone (Condylactis gigantea), Santa Barbara Island, Abrolhos Islands, Bahia, Brazil