And that's a good thing, because otherwise they'd get in the way of inflation. In fact, according to Brainerd, if it weren't for these missing bones, puffer fish would probably have never evolved ...

Traveling, let alone venturing out into the open ocean to search for an elusive inflating fish, was impossible. In the end, she obtained whole pygmy leatherjacket specimens from the Australian Museum ...

If you crossed a hedgehog with a fish, you'd get a puffer fish. This majestic, inflatable sea beast is one of the most unusual aquatic animals ever, with a unique set of defense mechanisms that ...