Robert Thompson / Flying crab (Liocarcinus holsatus) in rockpool, St John's Point, near Kilough, County Down, Northern Ireland, February 2013

Sue Daly / Velvet Swimming Crab (Necora / Liocarcinus puber) male guarding female. Gouliot Caves, Sark, British Channel Islands, August.

Sue Daly / Velvet swimming crab (Necora puber) portrait, Channel Islands, UK July

Sue Daly / Velvet swimming crab (Necora puber) close up, Channel Islands, UK July

Sue Daly / Velvet swimming crab (Necora puber) Channel Islands, UK, June

Linda Pitkin / 2020VISION / Portrait of Velvet swimming crab (Necora puber / Liocarcinus puber), St Abbs (St Abbs and Eyemouth Voluntary Marine Reserve), Berwickshire, Scotland, UK, August 2011

Alex Mustard / 2020VISION / Swimming / Harbour crab (Liocarcinus depurator) displaying claws to defend its patch of seabed in a sea loch, Loch Fyne, Argyll and Bute, Scotland, UK, July. Did you know? Of the ten limbs of the swim...

Sue Daly / Velvet Swimming Crab (Necora / Liocarcinus puber) beneath three sea anemones. Channel Islands, UK, May.

Sue Daly / Velvet Swimming Crab (Liocarcinus / Necora puber). Channel Islands, UK, May.

Sue Daly / Velvet Swimming Crab (Necora / Liocarcinus puber). Channel Islands, UK, March.

Graham Eaton / Velvet swimming crab (Necora puber) pair mating, Trefor, Wales, UK, July.

Robert Thompson / Velvet swimming crab {Liocarcinus / Necora puber} underwater, Ballyhenry Point, Strangford Lough, County Down, Northern Ireland, UK, September