Earth Without Oceans: A Planet Left Dry. Posted: April 17, 2025 | Last updated: April 17, 2025. Uncover the dramatic environmental and geological transformations that would occur if Earth's oceans ...

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 .

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 ...

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.

Pale green dot. The oceans were likely once a vibrant green color between 3.8 and 1.8 billion years ago, according to a study published in the journal Nature Ecology & Evolution.During this period ...

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 ...

We’ve always called Earth the blue planet, but that color might not be permanent. Previous research claims our oceans were once green, and if environmental conditions shift dramatically, a new ...