Spider crab

Spider crab

Spider crab is a general term for invertebrates in the order Decapoda of the subphylum Crustacea, family Spider Crab.
Blue crab

Blue crab

Blue crab, also known as green crab or delicious swimming crab. Common edible crab on the west coast of the Atlantic, with a delicious taste. Often inhabiting mudflats, harbors, and deltas. The head and chest armor is about 7.5 centimeters long, 15-18 centimeters wide, with a light green back and light blue feet. Blue crabs are native to the western Atlantic from Nova Scotia to Argentina. They have been introduced to Japan and European waters, as well as in the Baltic Sea, North Sea, Mediterranean Sea, and Black Sea.