When you are diving and see this slow-moving 15-inch-long fish, look but don’t touch! The puffer-fish has a very-deadly neurotoxin in its skin that is over 1,000 times more powerful than cyanide.

Like other puffer fish, the grass puffer accumulates the neurotoxin TTX to discourage would-be predators. However, grass puffers also accumulate a non-toxic analog of TTX called 5,6,11-trideoxyTTX ...

Like other puffer fish, the grass puffer accumulates the neurotoxin TTX to discourage would-be predators. However, grass puffers also accumulate a non-toxic analog of TTX called 5,6,11-trideoxyTTX ...

The fish inhabit inshore and near-shore areas, over sand or mud bottoms, the agencies said. Another type of puffer fish, the northern puffer, is more common in Rhode Island waters.