Alex Mustard / 2020VISION / Great spider crab (Hyas araneus) on Deadman's fingers (Alcyonium digitatum) coral, feeding in a current, Loch Carron, Ross and Cromarty, Scotland, UK, April

Wild Wonders of Europe / Lundgren / Great spider crab (Hyas araneus) decorated with hydroids, Moere coastline, Norway, February 2009

Olga Kamenskaya / Great spider crab (Hyas araneus) Novaya Zemlya, Russian Arctic, July

Olga Kamenskaya / Great spider crab (Hyas araneus) Novaya Zemlya, Russian Arctic, July

Olga Kamenskaya / Great spider crab (Hyas araneus) Novaya Zemlya, Russian Arctic, July

Olga Kamenskaya / Great spider crab (Hyas araneus) Svalbard, Norway, September.

Scott Leslie / Arctic Lyre Crab (Hyas coarctatus) among sea anemones and Cunner (Tautogolabrus adspersus) school, Bonne Bay, Newfoundland, Canada

Franco Banfi / Great spider crab (Hyas araneus) Arctic circle Dive Center, White Sea, Karelia, northern Russia

Alex Mustard / 2020VISION / Great spider crab (Hyas araneus) on Deadman's fingers (Alcyonium digitatum) coral, feeding in a current, Loch Carron, Ross and Cromarty, Scotland, UK, April

Solvin Zankl / Contracted spider crab (Hyas coarctatus) with hydroids, Atlantic Ocean,

Solvin Zankl / Great spider crab (Hyas araneus) on Kelp (Laminaria hyperborea), Atlantic Ocean, North West Norway

Solvin Zankl / Great spider crab (Hyas araneus) with hydroids, Atlantic Ocean, Norway