Some jellyfish species carry venom strong enough to cause severe pain, heart complications, and nervous system disruption.

The investigative minds at How to Survive rank the world's most toxic stingers, from the Box Jellyfish to the Irukandji, and ...

A North Queensland teen has described the “stabbing” pain of an Irukandji jellyfish sting that left him hospitalised and ...

TEXAS, USA — A couple of strange-looking jellyfish spotted on North Padre Island this week turned out to be Atlantic box jellyfish, according to researchers with the Harte Research Institute. Jace ...

Box jellyfish get their name from their cube-shaped bell, with long tentacles trailing from each corner. When alive in the water, those tentacles can stretch several feet. "Unlike most jellyfish, they ...

Non-life threatening symptoms experienced by a woman who was stung while swimming inside the Horseshoe Bay stinger net on ...

University of Cambridge and Anglia Ruskin University (ARU) provide funding as members of The Conversation UK. An upside-down jellyfish drifts in a shallow lagoon, rhythmically contracting its ...

Turns out jellyfish and sea anemones – among the ancient creatures with a nervous system instead of a brain – have a very similar sleeping routine to our own. A new study published in Nature ...

Irukandji jellyfish are some of the most dangerous creatures in the world—capable of delivering stings that can lead to brain hemorrhages. One minute, you’re swimming in the sparkling water off the ...

Humans began sleeping as a way to partly help reduce DNA damage in nerve cells, scientists at Bar-Ilan University in Israel discovered while studying jellyfish and sea anemones. Both species sleep for ...

Jellyfish and sea anemones are curious creatures: these organisms evolved without a brain and, as scientists discovered only in the past few years, don’t need one to sleep. The animals do, however, ...