They are called foam animals
They were called sea monkeys. They were actually brine shrimp eggs you added to salty water. There are small toys made from Polyacrylamide a water absorbing polymer which is very similar to the...
Im Sorry, but i don't know. Im wondering the same thing......
Put it in the water....
It absorbs water and stretches it out. If left out for a couple of days it will shrink back to the original size.
you put it in hot water