What color is the ocean?
The Real Answer
The ocean appears blue because water absorbs red wavelengths of light and scatters blue wavelengths (Rayleigh scattering), the same phenomenon that makes the sky blue. In shallow water near shores, it often looks green or turquoise because of sunlight reflecting off sand and the presence of algae. In deep ocean trenches with minimal light, it appears dark blue or black. The color also changes with weather, time of day, and water clarity.
You're staring at a massive body of water that's actively eating red light and spitting back blue, and your brain just accepts this as 'the ocean's color' instead of 'we're watching light die.' The ocean isn't blue — it's the color of all the wavelengths that couldn't escape.
Basic sketch — the funniest questions get upgraded to a full cartoon.
Why People Ask This
This question usually hits kids or people standing at the beach for the first time in a while — the ocean's color is so familiar that nobody stops to ask WHY it's that specific shade. The real answer (light absorption and scattering) surprises people because they assume the water itself is colored, when it's actually colorless and acting as a filter.