Known as the Sargasso Sea, sailors have crossed it for centuries, but few notice the border when they slip into glassy indigo ...

Antarctica is the world's great cooling unit. This vital part of Earth's climate system is largely powered by the annual ...

Close to the summit of an underwater mountain west of the Mid-Atlantic Ridge, a jagged landscape of towers rises from the ...

From striking Blue Iguana, which resembles the colour of the sea, to an adorable sea otter, here are eight wild animals that have made a remarkable comeback.

Cavers encountered a massive blue crab in a cavern in India, marking the first time the at-risk species had been spotted in the region in 150 years, per a watershed study published May 26 in the ...

The best places to snorkel near London (yes, really) — from Margate to Eastbourne - There’s a surprising amount of sea life ...

The Blue Grotto (or Grotta Azzurra) is the most famous site on Capri, and it's easy to see why. The grotto is a natural sea cave with a small entrance, and it is illuminated in a blue and silver ...

Scientists proved that the sea still holds some big mysteries after capturing footage of the colossal squid — the largest invertebrate on the planet — in its habitat for the first time.

they face threats from loss of habitat, boat collisions, cold stress and entanglements with fishing lines and litter. The past few years have been particularly harrowing for the sea cows ...