If you've been in the ocean, you may have noticed that red objects tend to lose their color under water, and there's a good ...

The deep blue sea may soon be more of deep green, specifically in the tropics, a new study revealed. NOAA Fisheries/James Morioka photo A large swath of Earth’s oceans changed color over the ...

More than 56% of Earth's oceans have changed color. It's not clear exactly what's driving this, though it's likely linked to the changing climate.

The color of deep blue oceans, shallow turquoise waters, and emerald green coasts is quickly changing as the planet warms, according to new research published in the journal Nature.. Analyzing 20 ...

Blue holes are large marine sinkholes that lead into underground cave systems, typically found in the shallow coastal waters of the ocean, and are named for their striking deep blue color.