i am here to make a documentary about spider crabs: The Giant Spider Crab is shown on the screen to the left. They can grow up to 12 feet. Although, they look scary, they're pretty docile, as they only attack if you attack them first. Their bite isn't dangerous, but is painful. These crabs live in waters of the Pacific Ocean near Japan. They have sharp legs to help climb around. (The rest is WIP, more will come later!)