This is the part that melts your brain. A Japanese spider crab can have a leg span of over 12 feet. That’s from claw tip to claw tip.
Picture a small car with legs. Or a giant spider with a crab attitude. Its body alone can be the size of a basketball.
The heaviest recorded one weighed a whopping 44 pounds. That’s like carrying a toddler-sized suitcase made of armor.
Why Are They So Huge?
It’s called deep-sea gigantism. Cold water and scarce food makes animals grow big over time. It’s a survival trick—being huge helps them travel far to find snacks.
They also live a ridiculously long time. Some scientists think these crabs can survive for 100 years. Imagine being a crab that’s older than your great-grandma.
They don’t stop growing. Every molt makes them a little bigger. It’s like a never-ending growth spurt for a medieval tank.
