EVERYDAY SCIENCE

Detailed explanation-1: -Page 2. 3. The cheliped is the entire claw which is made up of a movable (dactyl) and fixed finger.

Detailed explanation-2: -The blue crab’s shell-called the “carapace”-is a blue to olive green. Shells can reach up to 9 inches across. Blue crab claws are bright blue, and mature females have red tips on their claws too. They have three pairs of walking legs and rear swimming legs that look like paddles.

Detailed explanation-3: -All in all, the Blue Crab has five sets of appendages. This includes a pair shaped like paddles. Called swimmerets, they make this crab a strong swimmer.

Detailed explanation-4: -The blue crab is so named because of its sapphire-tinted claws. Its shell, or carapace, is actually a mottled brownish color, and mature females have red highlights on the tips of their pincers.

Detailed explanation-5: -Appendages Ten legs (five pairs) including a claw-bearing pair with spines used for feeding and defense, followed by three pairs of sharply pointed walking legs, and a pair modified as flat swimming paddles at the rear, swimming legs.