MEET THE JAPANESE SPIDER CRAB, THE DADDY LONG LEGS OF THE SEA

Meet The Japanese Spider Crab, The ‘Daddy Long Legs Of The Sea’

With a leg span of 13 feet, the Japanese spider crab is the biggest crab in the world — and the stuff of nightmares in Japanese folklore.

The Japanese spider crab is a giant sea creature that lurks in the waters surrounding Japan. Gaming enthusiasts probably recognize this crustacean from the Animal Crossing: New Horizons video game while bold Japanese foodies might enjoy this crab on their dinner table.

The Japanese spider crab is thought to be the biggest crab in the world, with a leg span of up to 13 feet and an average weight of 40 pounds.

It is also likely the crab with the longest lifespan, living to be up to 100 years old. Perhaps even more impressive, the spider crab is one of the oldest living species on Earth, dating back about 100 million years.

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The Prehistoric Origins Of The Japanese Spider Crab, The World’s Biggest Crab

Giant Japanese Spider Crab

Wikimedia Commons

The Japanese spider crab is the biggest crab in the world.

The Japanese spider crab’s presence commands attention with its bright orange hue and 10 lengthy limbs. Its legs — which are plentiful enough to lock an enemy in a powerful embrace — are indeed the sea creature’s most striking features.

The Japanese spider crab was first described by Western science in 1836 by Dutch zoologist Coenraad Jacob Temminck, who noted its impressive claws and ability to cause injury. Its scientific name, Machrocheira kaempferi, commemorates Engelbert Kaempfer, a German naturalist and physician who studied plants in Japan during the 17th century.

But the ancestry of spider crabs can be traced all the way back to prehistoric times. In 2013, researchers discovered the oldest known spider crab species in a fossil reef in northern Spain.

The oldest species of spider crab lived about 100 million years ago on Earth.

The ancient spider crab species was named Cretamaja granulata and lived 100 million years ago during the Cretaceous period. Unlike its giant descendants, the C. granulata was small, measuring less than an inch. Still, it exhibited physical characteristics that were distinct to spider crabs.

“The previous oldest one was from France and is some millions of years younger,” said study author Adiël Klompmaker. “This discovery in Spain is quite impressive and pushes back the origin of spider crabs as known from fossils.”

The earliest spider crab specimen displayed at the American Museum of Natural History measured 12 feet across.

The Japanese spider crab’s limbs can grow up to 13 feet long, making the species the biggest arthropod in terms of length in the world.

However, the world’s largest crab loses its top rank when it comes to weight. While the giant spider crab can weigh 40 pounds, it’s still no match for the American lobster, which can easily tip the scales beyond that.

In 2009, the biggest Japanese spider crab in recent decades was caught. It was a male specimen with a 12-foot-long leg span and a weight of 44 pounds. The 40-year-old giant spider crab was fittingly named Crabzilla and displayed at the Scheveningen Sea Life center in The Hague, Netherlands.

It was later moved to the Sea Life in Paris Val d’Europe Aquarium in France, where visitors can still see the live giant firsthand.

The Dead Man’s Crab

The Japanese spider crab lives in the ocean off the coast of Japan. They can inhabit waters as deep as 1,000 feet, but they move to shallower depths to breed.

In its native Japan, the animal is simply known as taka-ashi-gani (“long legs”) or shinin-gani (“dead man’s crab”). The latter nickname comes from Japanese folklore, which describes the ocean animal as a sea-dwelling monster that preys on unsuspecting sailors or divers and drags them to their watery graves to feast on their decaying corpses.

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