While swarm of jellies may look serene, you're best off keeping your distance. A sting from the most dangerous jellyfish on Earth can be deadly. Even when we're not looking at the most dangerous, many ...

These jellyfish are not able to sting humans—so no need to worry about encountering them while swimming. They are somewhere between one to two-and-a-half centimeters in diameter and mostly ...

During the polyp stage, jellyfish can live with or without symbiotic algae, setting up a natural experiment. The team exposed two groups of jellyfish polyps to a harmful bacterium, one group of ...