Environment
Fact-checked

At AllThingsNature, we're committed to delivering accurate, trustworthy information. Our expert-authored content is rigorously fact-checked and sourced from credible authorities. Discover how we uphold the highest standards in providing you with reliable knowledge.

Learn more...

What is a Red Rock Crab?

Misty Amber Brighton
Misty Amber Brighton

A red rock crab is a type of crustacean that is normally found in the Puget Sound area of the northwestern U.S. and southern Canada. It is known for its very thick shell, which is usually a deep red color. They can be very aggressive creatures, and often pinch people, even through heavy gloves.

These animals are often caught commercially in the Puget Sound area, a marine waterway that extends from Washington State to British Columbia, Canada. Even so, they are also found off the eastern coasts of the U.S. and Canada. Their Atlantic Ocean habitat ranges from Nova Scotia to Florida.

Some types of crab, such as red rock crab, can be highly aggressive.
Some types of crab, such as red rock crab, can be highly aggressive.

Red rock crab are known for having a very thick shell that is often difficult to break or crack. It is usually a dark red color, but might also be brown. Generally speaking, crabs are darker in northern regions than in the south. They usually have black tips on the end of their claws, both in front and back.

Males are typically slightly larger than their female counterparts. An average male is usually around seven inches (17.78 cm) wide from one side of his covering to the other. A female, on the other hand, might only be around five inches (12.7 cm) wide across her shell.

Red rock crabs can be found in southern Canada.
Red rock crabs can be found in southern Canada.

Red rock crab generally prefer shallow waters in bays or estuaries. Here they may make their beds in rocky areas or beds of gravel on the bottom. They might also select areas where kelp grows, as it can offer them a moderate amount of protection from some of their predators.

These crustaceans are known to be extremely aggressive, so care must be taken when handling them. This includes wearing thick, leather gloves when picking them up. Even so, a red rock crab can sometimes bite or pinch through this type of heavy cloth. Long sleeves and pants should also be worn to protect the arms and legs.

When eating this seafood, diners can find most of its meat in the animal's claws. More might also be found in its thighs as well. For this reason, when eaten as a main course, approximately eight to 10 red rock crabs per person should be served.

Even though it is not an especially meaty type, red rock crab nonetheless can have a mild yet pleasant taste. They are usually boiled while they are still alive because their meat tends to spoil quickly. People who enjoy crab and other seafood may enjoy catching and eating this species.

Frequently Asked Questions

What is a Red Rock Crab?

The Red Rock Crab, also known as Cancer productus, is a crustacean native to the Pacific coast of North America. It's recognized for its robust build, brick-red coloration, and large, powerful pincers. These crabs are typically found in rocky intertidal zones where they feed on mussels, barnacles, and smaller crabs.

How big do Red Rock Crabs get?

Red Rock Crabs can reach a carapace width of up to 8 inches (20 centimeters). They are considered mature when they are about 5 inches (12.7 centimeters) across. Their size makes them a formidable predator and a sought-after catch for recreational and commercial fishers.

What do Red Rock Crabs eat?

Red Rock Crabs are omnivorous scavengers with a preference for meat. Their diet primarily consists of shellfish such as mussels and clams, but they will also consume dead fish, snails, and even other crabs. Their strong claws allow them to crack open the shells of their prey with ease.

Where can you find Red Rock Crabs?

These crabs are commonly found along the western coast of North America, from Alaska to Baja California. They inhabit rocky shores, tide pools, and kelp beds, often hiding in crevices or under rocks during low tide to avoid predators and conserve moisture.

Are Red Rock Crabs good to eat?

Yes, Red Rock Crabs are considered a delicacy by many seafood enthusiasts. Their meat is sweet and succulent, similar to that of the Dungeness crab, though they have a higher ratio of shell to meat. They are often boiled or steamed and can be used in a variety of dishes.

How do Red Rock Crabs reproduce?

Red Rock Crabs mate in the spring and summer. Females can store sperm for several months before using it to fertilize their eggs. They carry the fertilized eggs under their abdomen until they hatch, releasing thousands of larvae into the water column, which then go through several planktonic stages before settling to the seafloor and maturing.

Discuss this Article

Post your comments
Login:
Forgot password?
Register:
    • Some types of crab, such as red rock crab, can be highly aggressive.
      By: Gordon Logue
      Some types of crab, such as red rock crab, can be highly aggressive.
    • Red rock crabs can be found in southern Canada.
      By: Iryna Volina
      Red rock crabs can be found in southern Canada.