puffer fish are not like balloons. Because what's normally inside them isn't air. It's water. Elizabeth Brainerd: What they do is they actually take water into their mouths in a big mouthful of ...

The fugu or puffer fish is one of the most poisonous creature on the planet with toxins 1,200 times more deadly than cyanide.

The soft, squishy device was inspired by the puffer fish, which inflates quickly like a balloon when threatened. The Massachusetts Institute of Technology team behind the pill says it can last for ...