Although the ocean covers roughly 71% of Earth’s surface, more than 80% of that ocean has yet to be mapped, explored, or even ...

A 'ghost' island that suddenly appeared in the Caspian Sea in early 2023 is playing a centuries-long game of peekaboo with scientists, and it's about to vanish once again – if it hasn't already ...

As a result, much less water has been flowing into the Caspian Sea,” Kozybakov told Al Jazeera. “A hundred years ago, the sturgeon would live for many decades, and no one would touch it.

Damming, over-extraction, pollution and, increasingly, the human-caused climate crisis are driving the decline of the Caspian Sea. Some experts fear it’s being pushed to the point of no return.

Along the southern coast of the Caspian Sea in Manzandaran, Iran, the remains of a shipwreck were discovered under a sand dune. The Caspian Sea is surrounded by five countries-Russia, Kazakhstan ...

About 2,500 dead seals have washed ashore on the edge of the Caspian Sea in southern Russia, officials announced on Sunday. The cause of the mass die-off wasn’t known, but Russian authorities… ...

The Caspian Sea is drying up. The world’s largest inland body of water has dropped by two metres since the mid-1990s, shrinking by 15,000 square km, an area bigger than Connecticut.

Kozybakov did not like it. It was salty and “smelled like the sea”, said Kozybakov, an ecologist, now 51. He grew up in Aktau, a city in western Kazakhstan on the shores of the Caspian Sea.