A new Nature Communications study has tracked these lulls in cassiopea jellyfish, which belong to a 500 million year-old ...

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 ...

One minute, you’re swimming in the sparkling water off the Queensland coast. The next minute, you’re fighting for your life.

Jellyfish are often grouped together as similar threats, but comparisons tell a different story. This video ranks multiple ...

Ginger Zee swims in a lake filled to the brim with 20 million jellyfish. — -- Welcome to Palau! The string of over three hundred tiny green islands, 3 degrees north of the equator in the North ...

Jellyfish infestations are troubling tourists and scientists alike. A diver attaches a sensor to a large Echizen jellyfish, Oct. 4, 2005 off the coast of Komatsu in Ishikawa prefecture, Japan. Yomiuri ...

Most people think the great white shark is the ocean predator they should fear the most. However, this type of jellyfish, statistically speaking, is much deadlier. Sharks are probably the animal that ...