Jellyfish are some of the most mysterious and beautiful creatures in the sea. They have no bones, no brains, and yet they’ve ...

An underwater videographer has just published mesmerizing footage of the world’s largest, longest, and heaviest known ...

Nighttime underwater photos show fish hanging out with jellyfish and anemones — perhaps seeking their protection.

China has revealed a new biomimetic underwater drone with a transparent, jellyfish-like body designed for stealth surveillance missions, capable of blending into the deep-sea environment.

China has unveiled a transparent, jellyfish-shaped bionic robot for stealth underwater exploration. Developed by Northwestern ...

There is a reason we call ourselves the Blue Planet.

The box jellyfish is one of the deadliest creatures in the ocean, with venom so powerful it can cause heart failure within ...

A box jellyfish advisory has been issued for beaches at Waikiki and Maili beaches today. Honolulu Ocean Safety issued the ...

Warning: This article contains mentions of suicide and death. Please proceed with caution.

Meet the Atlantic wolffish, green humphead parrotfish, and other unusual species with extraordinary adaptations.

"At night it's pitch black down there in bad weather — the sky and sea just form a huge black mass. The most terrifying thing ...

While they might look harmless, experts say a Portuguese man o’ war could leave a painful sting you won’t forget.