A species of puffer fish with toxic flesh and bone-crushing jaws is expanding its range throughout the Mediterranean, causing local authorities to issue warnings to tourists about the risk of bites.

Some places are even taking precautions to protect swimmers and bathers from the invasive silver-cheeked toadfish, also called harefish.

The fish reportedly entered the Mediterranean through the Suez Canal and has spread as sea temperatures have warmed. It carries tetrodotoxin, a deadly neurotoxin found primarily in its flesh and internal organs, and its powerful beak-like jaws can shred fishing gear and bite through bone.

Experts note, however…

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