Giant crabs come in about as many varieties as normal-sized crabs do (some of which are not true crabs, taxnomically speaking, but are still commonly referred to as such), some of which are described here. Most giant crabs have a thick red, white or yellow exeskeleton, and six legs which they use to walk around above or below water. Most giant crabs will also burrow into the sand of a beach to hide from a predator or lie in wait for prey, but giant hermit crabs are particularly cautious, reusing a discarded shell or shell-like object to protect itself while moving around above water. Male giant fiddler crabs have one claw which is much larger than the other, and can be used to bash foes, stunning or crushing them, while females do not possess this adaptation. Giant spider crabs are rarely seen on land, as they usually keep to very deep waters; but they are very tall, with long legs and sharp pincers, making them dangerous when they are. Instinct: to defend territory.

• Bash or pinch foes with its claws.
• Burrow into the sand to hide from danger.