Just above we see a pufferfish doing its physical thing. They also have a very important chemical thing. Do not eat.
I've cooked up the ones I kept catching in a crab trap. I think the toxin isn't heat stable, and the risk is more with the sushi.
It appears to simply not be here, or the local puffers don't pick it up. My grandfather regularly ate them. I only tried it because the five fish came back to the trap after I let them go the first time. The PCBs are a bigger threat here. The toxic pufferfish where limited to Asia, but the species that carries it appears to be spreading with warmer temperatures. Tetrodotoxin, an Extremely Potent Marine Neurotoxin: Distribution, Toxicity, Origin and Therapeutical Uses Tetrodotoxin: Chemistry, Toxicity, Source, Distribution and Detection
Whatever microbe is responsible for the toxin hasn't arrived to Eastern US waters yet. I see the toxin is like PCBs; it gets concentrated in fatty tissue, like the liver.