1. Due to climate change, the catch volume has significantly increased even in Hokkaido, where pufferfish were rarely caught. 2. The problem is the 'hybrid pufferfish' that was born when the habitats of pufferfish overlapped due to global warming. When a hybrid pufferfish is born, even the parts that were not toxic in the parents become toxic. Because it is a hybrid, it is impossible to determine how much poison is present in any part. 5. Spin the wheel