rock crab (noun)

1. In Greek mythology, the rock crab was said to be a sacred creature associated with the god Poseidon.

2. The artist painted a stunning still life piece featuring a rock crab as the focal point.

3. The science fiction novel depicted a distant planet with giant rock crabs roaming its surface.

4. The luxurious beachfront villa had a beautiful indoor aquarium with rock crabs as part of its unique design.