Crab

Definition of Crab as it relates to Animals, Marine Life, Fish Species

Crabs are marine arthropods belonging to the infraorder Brachyura, characterized by their short projecting "tail," broad carapace, and pincer-like claws. They inhabit diverse aquatic and terrestrial environments worldwide, with approximately 5,000 identified species. Crabs display a wide range of sizes, shapes, and colors, adaptating to various ecological niches. Their diet is omnivorous, comprising algae, small invertebrates, and decaying organic matter. Reproduction involves the release of eggs into the water, where they hatch as planktonic larvae before metamorphosing into juvenile crabs. Crabs play vital roles in food chains and nutrient cycling within ecosystems. Some notable species include blue crabs, king crabs, and hermit crabs.

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