See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Earth's oceans, known for their deep blue hue, could one day undergo ...

The deep blue sea may not have always been so blue. A new study suggests that the Earth's oceans may have changed color over time and could change again in the future, depending on the chemical makeup ...

Earth's oceans may have displayed a very different color several billion years ago. This hypothesis emerges from a recent study conducted by a Japanese team. Researchers from Nagoya University ...

The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see. When sunlight hits ...