Locally known as kasab or lambay, the blue swimming crab (Portunus pelagicus) is a very important seafood product among the Philippines. It is found all over the country, but the major fishing grounds are situated in Western Visayas, especially in Visayan Sea and Guimaras Strait. The Blue Swimming crab is a large sized crab, and it has a rough to granulose, broad and flattened carapace. Its legs are flattened to varying degrees, last 2 segments of last pair paddle-like.
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