I found this on a beach on the East Cape of Cabo San Lucas.These fish inflate to discourage predators (and how!). They have no pelvis and few ribs, allowing them to inflate and become spherical without breaking bones. Their skin contains an abundance of collagen fibers that allow it to expand 30 to 40%.
From National Geographic:
…Toxicity A predator that manages to snag a puffer before it inflates won’t feel lucky for long. Almost all pufferfish contain tetrodotoxin, a substance that makes them foul tasting and often lethal to fish. To humans, tetrodotoxin is deadly, up to 1,200 times more poisonous than cyanide. There is enough toxin in one pufferfish to kill 30 adult humans, and there is no known antidote.
As Food: Amazingly, the meat of some pufferfish is considered a delicacy. Called fugu in Japan, it is extremely expensive and only prepared by trained, licensed chefs who know that one bad cut means almost certain death for a customer. In fact, many such deaths occur annually.…
I have it hanging in my shop. Kids love it.