5. The Box Jellyfish Colorful Jellyfish underwater. Jellyfish moving in water. Image via Depositphotos Although seemingly fragile, box jellyfish are highly effective survivors in the ocean. Known for ...

The artwork was created to mark the start of National Marine Week, which runs from July 26 to August 10. The mural, located on the side of the Tendring Council -owned Beach Patrol office, features ...

The underwater city where black roses bloom sinan dogan/iStockphoto/Getty Images via CNN Newsource Halfeti was partially submerged to create a resevoir and dam in 2000.

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At Caltech, researchers have turned living jellyfish into low-cost, remotely controlled ocean robots — creating real-life cyborgs for deep-sea exploration and environmental sensing.

At first glance, they look like any other moon jellyfish — soft-bodied, translucent and ghostlike, as their bell-shaped bodies pulse gently through the water. But look closer, and you'll spot a ...

SWARMS of jellyfish “the size of dustbin lids” have been spotted washing up along UK beaches – and experts say even more could arrive as temperatures soar to 33C. Beaches across North Wales ...