Find the crab first, then directly irradiate the crab with light to keep it still, and finally clamp the crab with a clip. The following is the specific operation method. First, preparation materials: flashlight, clip.
1, look for crabs that haunt at night first.
2. After finding the crab, directly illuminate the crab with light to keep it still.
3. After the crab does not move, gently put the clip under the crab.