Two species of sea anemones of the genus Sagartiogeton are reported from the reducing environments of the Bering Sea (NW Pacific). One species, Sagartiogeton californicus, is abundant on the Koryak slope in the methane seep sites as well as in the background,

Sea anemones in genera Adamsia, Calliactis and Paracalliactis (family Hormathiidae) engage in a mutualistic symbiosis with hermit crabs in which the anemone gains substrate and food in exchange for defending the crab. Some of the sea anemones also expand

The symbiotic association between hermit crabs and sea anemones is a classic example of mutualism in the sea. Some species of hermit crabs have the ability to transfer the symbiotic anemones onto their new shells when they change shells. The hermit crab

Two species of sea anemones of the genus Sagartiogeton are reported from the reducing environments of the Bering Sea (NW Pacific). One species, Sagartiogeton californicus, is abundant on the Koryak slope in the methane seep sites as well as in the background,