Japanese Spider Crab The biggest crab in the world!

Japanese Spider Crab

I am writing about a Japanese spider crab.

Japanese Spider Crab

I am writing about the Japanese spider crab. They are the biggest crab in the world with the largest leg span than any arthropod. I picked this animal because I think it is very cool. This animal is interesting so I think you will like learning about it. Let’s get into the facts.

This marine crab species can be found in the waters of Japan, hence the name.

The body of this crab may grow to 40cm or 16 inches. The Japanese Spider crab is orange with white spots along the legs.The crab is one of the longest living animals in the world aging up to 100 years old.This giant crab can be found In Suruga Bay.

Even though these crabs are so giant, octopi eat them! Some people call the Japanese Spider Crab “Crabzilla.”Crabzilla's front limbs are his feeding arms, each over five feet long and ending in sizeable claws.They are a Japanese delicacy and are usually salted and steamed, but eating them in the spring is banned because that is when they lay their eggs.In legend, they are described as feeding on the bodies of drowned sailors. That could in part be true, but these marine scavengers will eat just about anything they can find.

These spider crabs mate seasonally during early spring, from January through March. Mating behavior is rarely observed. The Japanese name for this species is taka-ashi-gani literally translating to “tall legs crab.” Their armored exoskeletons help protect them from larger predators such as octopi, but giant spider crabs also use camouflage. The crab's bumpy carapace blends into the environment.

Although not the heaviest, the Japanese giant spider crab is the largest known living arthropod. The well-calcified carapace is only around 37 centimeters long, but adult specimens can be nearly 4 meters long from one tip of one cheliped (a claw-bearing leg) to the other when stretched apart. The carapace of Macrocheira kaempferi is sub-circular and pear-shaped (pyriform), narrower towards the head. Females tend to have wider, although slightly smaller ,abdomens than males. Spiny and stubby tubercles (growths) cover the carapace.

Macrocheira kaempferi is an omnivorous scavenger. These large crustaceans generally do not hunt, but instead crawl along and pick at dead and decaying matter along the sea bed. This includes both animal and plant matter. They occasionally eat living kelp and algae. Although they move slowly, giant crabs occasionally hunt for small marine invertebrates that they can catch easily. Mariners used to tell tales of kaempferi dragging sailors underwater and feasting on their flesh.

Before I did this I just knew what a Japanese spider crab looked like, now I know they don’t even hunt generally, and they’re GIANT!


Created with images by hoyasmeg - "Giant Japanese spider crab_0636" • bryce_edwards - "Japanese Spider Crabs" • Rachel's Secret - "angry japanese gigantic spider crab!" • Dick Thomas Johnson - "Shinagawa Aquarium: Japanese Spider Crab" • thirteenthbat - "Japanese Spider Crab" • thirteenthbat - ""I want in the photo!"" • Roller Coaster Philosophy - "Ocean Park 131" • Abhishek_Kumar - "Spider crab (japanese), Underwaterworld, Sentosa, Singapore" • Dick Thomas Johnson - "Shinagawa Aquarium: Japanese Spider Crab" • Maarten1979 - "Giant Spider crabs" • hoyasmeg - "Giant Japanese spider crab_0636" • Maarten1979 - "Mugshot of a Japanese Spider crab" • Matt Tillett - "Japanese Spider Crab" • Joelk75 - "spider crab" • hoyasmeg - "Giant Japanese spider crab_0637"

Made with Adobe Slate

Make your words and images move.

Get Slate

Report Abuse

If you feel that this video content violates the Adobe Terms of Use, you may report this content by filling out this quick form.

To report a Copyright Violation, please follow Section 17 in the Terms of Use.