Stonefish are the ocean’s deadliest disguise artists. They live in shallow tropical reefs around Australia and Southeast Asia, sitting motionless on the seafloor, coloured and textured like algae-covered rocks. They are almost impossible to spot.
Most of the time they’re just patient hunters waiting for an unwary fish to drift over their head. When prey gets close, the stonefish strikes upward with a sudden gulp - eating its meal in a fraction of a second.
The problem is the 13 venomous spines along its back, which inject one of the most potent fish venoms known. People who step on stonefish (which happens way more than you’d expect) feel sudden agony, swelling, and if they don’t get to a hospital quickly enough, sometimes death. There’s an antivenom - and lifeguards in tropical Australia carry it on call.
