The Australian box jellyfish (Chironex fleckeri), is so poisonous that if one of its 6-foot-long (1.8-meter-long) tentacles ...

When thinking of dangerous animals, large creatures often come to mind. However, some of the world's most toxic animals are ...

The infamous box jellyfish developed its frighteningly powerful venom to instantly stun or kill prey, like fish and shrimp, so their struggle to escape wouldn’t damage its delicate tentacles.

Jellyfish have survived for over 500 million years, making them more ancient than the dinosaurs. Today these otherworldly creatures can be found around the world, from coastal shallows to the ocean ...

IPOH: Initial investigations by the Perak Fisheries Department did not find poisonous and dangerous jellyfish which caused the death of a five-year-old French boy in Pangkor Island on Monday (Aug 15).

Poisonous bluebottle jellyfish have washed up on the shores of a popular Sydney beach with council claiming the warmer months will bring more frequent visits from the marine stingers. Picture ...

Jellyfish are known for drifting to and fro at the whim of ocean currents—but not all species are so passive. The millions of golden jellyfish that pack Palau’s Jellyfish Lake spend much of ...

If you have spent any time at the beaches on the Texas Gulf Coast, chances are you have seen jellyfish either in the water or washed up on the shore. However, there is another creature similar to a ...