And throughout 32 million square kilometers (12.4 million square miles, or nearly a tenth) of the ocean, photic zone depths decreased by 50 meters (164 feet).

Earth's oceans are a 'ticking time bomb' as acidity levels enter 'danger zone,' study suggests Only 0.001% of deep ocean has ever been explored by humans — an area equal to the size of Rhode Island ...

Using data from 2003 to 2022, the team found nearly 10% of the ocean’s photic zone has been squeezed by 50 m (164 ft). More dramatically, photic zones in some oceans have shrunk by 100 m (328 ft).

The ocean twilight zone, or mesopelagic zone, is the area of the ocean 600 to 3,200 feet below the surface. It’s where light begins to disappear, but it’s home to some of the most amazing ...