Meet the worlds largest crab that feeds on birds and breaks bones

You're referring to the Japanese spider crab (Macrocheira kaempferi), also known as the "world's largest crab"!

Here are some fascinating facts about this massive crustacean:

  1. Largest crab species: The Japanese spider crab is the largest arthropod in the world, with a leg span of up to 12 feet (3.6 meters) and a body length of up to 4 feet (1.2 meters).
  2. Feeds on birds: Yes, you read that right! Japanese spider crabs are known to feed on birds, including seabirds, shorebirds, and even penguins. They use their powerful claws to crack open the shells of their avian prey.
  3. Breaks bones: These crabs are also notorious for their ability to break bones. Their powerful claws can exert a force of up to 3,000 pounds per square inch (psi), which is strong enough to crush the shells of their prey and even break the bones of larger animals.
  4. Slow movers: Despite their massive size, Japanese spider crabs are surprisingly slow movers. They have a top speed of about 0.2 miles per hour (0.3 kilometers per hour), which is slower than a human walking pace.
  5. Deep-sea dwellers: Japanese spider crabs live in the deep waters of the Pacific Ocean, typically between 100 and 400 feet (30 to 120 meters) below the surface. They inhabit areas with rocky or sandy bottoms, where they can find food and shelter.
  6. Long lifespan: These crabs can live for up to 100 years in the wild, making them one of the longest-living crustaceans on the planet.
  7. Conservation concerns: Japanese spider crabs are considered a vulnerable species due to overfishing and habitat destruction. Conservation efforts are underway to protect their habitats and reduce the impact of fishing on their populations.

So, there you have it! The Japanese spider crab is an incredible, albeit intimidating, creature that commands respect and awe.