Crab Category
Crabs belong to the infraorder Brachyura within the order Decapoda, comprising over 6,800 species worldwide. These crustaceans feature a broad, flat carapace and five pairs of legs, with the first pair modified into pincers for defense and feeding. Marine crabs inhabit diverse environments from shallow coastal waters to deep ocean floors, while some species adapt to freshwater and terrestrial ecosystems. Their ecological roles include scavenging, predation, and serving as a crucial food source for numerous marine predators.