Can puffer fish blow up out of water?
If puffer fish are swimming, they gulp water into a special sack near their belly. But if they are frightened while in the air, perhaps while being fished out of the water, they will also gulp in air.
Does blowing up hurt pufferfish?
What happens to puffer fish when they puff?
When a puffer fish puffs up, it takes in water to increase its size. This violently forces the puffer’s organs to be pressed to the side, inside the body causing the organs to flatten. This creates an extreme amount of stress for the pufferfish. In some cases, the pufferfish dies from this stress.