Generally speaking, sand crabs may pinch people, but different kinds of sand crabs pinch people differently.
Some sand crab clips look terrible, but in fact they can't cause much pain. Some sand crabs have small clips, but it hurts when they clip people.
Therefore, although the sand crab may pinch people, the specific degree of pain needs to be judged according to the type and size of the sand crab.
When you meet a sand crab, you should keep a safe distance to avoid being caught.