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 ...

The key to predicting the presence of tiny, venomous and nearly invisible jellyfish may be blowing in the wind, new research finds. Subscribe to read this story ad-free Get unlimited access to ad-free ...

During this week’s beachcombing survey along the Texas coast, I found a ghostlike visitor washed ashore. It was an almost invisible jellyfish etched with delicate, radiating “ribs” that resemble fine ...

Close up of a irukandji, a poisonous and dangerous box jellyfish from Ningaloo Reef, Western Australia© Anna LoFi/Shutterstock.com One minute, you’re swimming in the sparkling water off the Queensland ...

One minute, you’re swimming in the sparkling water off the Queensland coast. The next minute, you’re fighting for your life. That’s a plausible series of events for people unlucky enough to be stung ...