Spider Crab

Unwelcome sight for those afflicted by Arachnophobia

Author: Pat
10th March 2012
 


The Spider crab looks like something out of ‘Alien’. Underwater, no-one can hear you scream…

typically has a shell encrusted with seaweed or barnacles

The arthropodic Spider Crab, or Hyas araneus is another seasonal visitor to recreational depths, usually between Spring and Summer. And when they’re in town, they’re really in town – it’s not unusual to see swarms of them falling over each other as they make their way to the shallows. Divers documented a recent mass migration into shallow waters around Cardigan Bay in Wales, for example.

If you’re finning across the bottom, watch out where you put your hands: although up to 110mm in size Spider Crabs typically have a shell encrusted with seaweed, barnacles and other hangers-on, which can make them difficult to spot, despite their considerable size. And they don’t take kindly to being poked.

Although not a mainstay of our diet over here, Spider Crabs taste rather good and not one to miss a commercial opportunity, UK fishermen catch around 5,000 tonnes annually.

Habitat

  • Normally lurking around the 120m zone
  • Spider Crabs amble into shallow <20m depths from roughly April to June
  • English Channel northwards, North Sea and Baltic
 
 
MORE Species
Picture of a Common Cuttlefish in the UK

Cuttlefish

Hovering and inquisitive mollusc is always fun to watch

Picture of a Velvet Swimming Crab

Velvet Swimming Crab

Fire-eyed crustacean needs an ASBO for behaviour

Picture of a Lumpsucker in the UK

Lumpsucker

Characterful and colourful animal has a neat party trick

 
 
©2013 British Diver