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 ...

The mythical Hydra may have been able to grow one of its many heads back every time it suffered a decapitation, but there are actual creatures capable of regenerating parts of their bodies bitten off ...

For Caribbean box jellyfish, learning is literally a no-brainer. In a new experiment, these animals learned to spot and avoid obstacles despite having no central brain, researchers report September 22 ...

For years, science fiction has promised a future filled with robots that can swim, crawl and fly like animals. In one research lab at Caltech, what once felt like distant imagination is becoming ...

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 ...

If you want to gather climate-change data from the deep ocean, why not just hitch a ride with an organism that's going down there anyways? That's the thinking which led to the creation of "biohybrid ...

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 ...