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.
Prized by humans for their sweet, tender meat, these wide-ranging, ten-legged crustaceans are among the most heavily harvested creatures on the planet. Their scientific name, Callinectes sapidus, means "savory beautiful swimmer."
Average life span in the wild: 1 to 3 years
Size: 4 in (10.2 cm) long; 9 in (23 cm) wide
Weight: 1 to 2 lbs (0.45 to 0.9 kg)
Group name: Cast
Did you know? Female blue crabs mate only once in their lives.
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