WHAT is a King Crab? A spider? An Insect? No, it may be wrongly called a King Crab, or Horseshoe crab, but in fact it is a member of the Arachnid family - so its closest relatives are scorpions and spiders.
The King Crab lives throughout Southeast Asia and along the Atlantic coast of North America.
All King Crabs have four pairs of legs, no antennae and only two body divisions.
The head and thorax are combined.
In comparison, insects have three body parts, three pairs of legs, and wings. Crustacea, such as crabs, lobsters and shrimps, have many pairs of legs, two body divisions and two pairs of antennae.
King Crabs have 'escaped evolution' and, along with scorpions and starfish, are believed to have existed for more than 150 million years.