Plastic containers are everywhere.

According to the popular science survey, the hermit crabs found more spacious artificial containers and plastic shells in the process of searching for shells. They crawled into the plastic containers out of instinct and were delighted to have a "new When they first opened the new house, they found that the plastic container was so slippery that once they entered it, they could no longer climb out. The "new house" also became a grave for hermit crabs. So the hermit crab will disappear out of thin air.