Alex Mustard / 2020VISION / Leach's spider crab (Inachus phalangium) sheltering from the current beneath tentacles of Snakelocks anemone (Anemonia viridis) Selsey, West Sussex, UK, May

Sue Daly / Snakelocks Anemone (Anemonia viridis). Maseline Harbour, Sark, British Channel Islands, July.

Christophe Courteau / Snakeslock anemone in tide pool split level France {Anemonia sulcata} Brittany

Christophe Courteau / Tentacles of Snakeslock anemones {Anemonia sulcata} Brittany France

Christophe Courteau / Snakeslock anemone tentancles opening {Anemonia sulcata} Brittany France

Christophe Courteau / Tentacles of Snakeslock anemones {Anemonia sulcata} Brittany France

Christophe Courteau / Tentacles of Snakeslock anemones {Anemonia sulcata} Brittany France

Christophe Courteau / Snakeslock anemones in tidepool low tide {Anemonia sulcata} Brittany France

Nick Upton / Snakelocks anemone (Anemonia viridis) among Coralweed (Corallina officinalis) ejecting remains of its prey, a mussel shell. Rhossili, The Gower Peninsula, July.

Nick Upton / Snakelocks anemone (Anemonia viridis) attached to a boulder alongside Coralweed (Corallina officinalis) and Flat / Purple top shells (Gibbula umbilicalis) in a rockpool, Rhossili, The Gower Peninsula,...

Nick Upton / Snakelocks anemone (Anemonia viridis) filter feeding in a rockpool, with closed Beadlet anemone (Actinia equina) in the background. Rhossili, The Gower Peninsula, July.

Solvin Zankl / Snakelocks anemone (Anemonia viridis / sulcata) San Pietro Island, Sardinia, Italy, Mediterranean, July