A very large crab with a circular, convex carapace which is bordered by strong tapering spines. It is red, brownish-red, or yellowish in colour and the body can grow up to 20 cm long and is often covered with attached algae.
Emily Wilson 2008. Maja squinado. Common spider crab. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 26/01/2011]. Available from: