The Spider Crab covers its back with various spines and tubercles, algae, and small invertebrates. It does this for self defense against predators.
They are as big as 13 feet,and they weigh 44 pounds.
crabs
Algae lives with fish
Crabs.
crabs
crabs ,starfish
They lives in a crab burrows.
Crabs, oysters, fish.
Crabs.
crabs,
crabs ,starfish