' They're not quite the world's largest crab - that would be the Japanese spider crab (Macrocheira kaempferi), which can reach a whopping 3.7 metres from claw to claw. But the coconut crab is the largest crustacean that spends all its adult life on land, with a Guinness World Record to prove it.

What is the largest type of crab?

And giants they are. Of the 60,000 species of crustaceans on Earth, Japanese spider crabs are the largest, spanning up to 12.5 feet from the tip of one front claw to the other.

Are king crabs bigger than spider crabs?

It`s typically 2 to 4 pounds, with about 25 percent edible meat. King crab: Generally 10 pounds, this huge crab can reach 20 pounds in the cold waters of the northern Pacific. ... The Japanese spider crab grows to 13 feet across the legs.