Filmed deep off California, a rarely seen seven-arm octopus emerges from ocean darkness, revealing surprising size, unusual feeding habits, and how much of the deep sea remains unexplored by ...

Large, seasonal aggregations of jellyfish, called jellyfish blooms, are becoming more frequent in many coastal regions. Here ...

This video reveals five jellyfish species known for their exceptional lethality and alarming potency. It examines how their nearly transparent bodies conceal tentacles equipped with powerful venom.

Almost a half-mile below the surface of Monterey Bay, California, scientists recently recorded rare footage of a seven-arm octopus — only the fourth time the same research team has spotted ...

It pulsed like a tiny heartbeat — a clear, quarter-sized jellyfish rising through the calm water of Taft Lake, sunlight flickering through its translucent body. The sight stopped Kate Lucas mid-paddle ...

Jellyfish are fascinating sea creatures with soft, bell-shaped bodies and long, flowing tentacles. They belong to a group of animals called Cnidaria and drift gracefully through the world's oceans — ...

An unprecedented number of "pink meanie" jellyfish, a species that can grow up to 50 pounds with tentacles stretching as long as 70 feet, are washing ashore along the Texas coast. From Port Aransas to ...

Multiple massive, rare jellyfish washed up on the Texas coast recently, surprising some beachgoers and feasting on a smaller jellyfish species. Jace Tunnell, the director of community engagement at ...

At Delaware's Lewes Beach, Beach Patrol Captain Strohm Edwards has seen more jellyfish this year than any other and stings have tripled. Along the Nantucket Sound shoreline, researchers believe ...

Since its inception, nuclear energy has faced a host of opposition, from oil conglomerates to well-intentioned anti-nuclear-weapons activists to environmental groups. As it turns out, even ocean ...

A penny-sized jellyfish has been spotted in the western part of Lake Erie as well as in western Pennsylvania. The stinging cells of these freshwater jellyfish can't pierce human skin. The non-native ...