Crabs: True Crabs and Hermit Crabs

How many species of true crabs are there worldwide?

• About 800

• More than 7,000

• Approximately 1,500

• Less than 500

What is the primary function of a crab's exoskeleton?

• To store food

• To attract mates

• To provide support and protection

• To help them swim faster

How do crabs use their claws in their environment?

• To swim

• To dig burrows

• To communicate with other crabs

• To capture food and defend against predators

What is a unique feature of hermit crabs compared to true crabs?

• They have ten jointed legs

• They can fly short distances

• They have a soft tail that they protect with a borrowed shell

• They have a hard exoskeleton covering their entire body

Why is it important for hermit crabs to find larger shells as they grow?

• To improve their swimming ability

• To attract mates

• To protect their soft tail from predators and drying out

• To store more food