The reason Earth's oceans may have looked different in the ancient past is to do with their chemistry and the evolution of photosynthesis.As a geology undergraduate student, I was taught about the ...

Nearly three-fourths of Earth is covered by oceans, making the planet look like a pale blue dot from space. But Japanese researchers have made a compelling case that Earth's oceans were once green ...

We can imagine different ocean colours without borrowing too much from science fiction. Purple oceans would be possible on Earth if the levels of sulphur were high .

Earth’s oceans may not have always been as brilliantly blue as they are today. In fact, there may have been a time when they weren’t blue at all. According to researchers at Japan’s Nagoya ...

By 600 million years ago, Earth’s oceans had changed drastically. Without large amounts of iron hydroxide to absorb blue light, the oceans finally took on the deep blue color we see today ...

Earth’s oceans used to be green, and they could turn purple next. What I think purple oceans might look like, generated with AI. Dall-E. View 2 Images 1 / 2.

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.

There are more than 500 species of sharks in the world’s oceans, from the 7-inch dwarf lantern shark to whale sharks that can grow to over 35 feet long. They’re found from polar waters to the equator, ...