Crabs are members of infraorder Brachyura. They are crustaceans with five pairs of legs, the first pair modified to form a pair of pincers, a flattish shell, and a short, broad abdomen folded under its thorax.
This category has the following 18 subcategories, out of 18 total.
The following 164 pages are in this category, out of 164 total. This list may not reflect recent changes.