Why is the sea blue

[Waterbuffalo]

Why is the sea blue?

[Waaii]

It isn't, it has to do with water depth and sea bottom and the weather and the way our eyes perceive light and colour I believe

[B00]

Or as my dad used to say...........

"Because it is................!"

[Clanad]

Here's a good previous discussion form the "search the Site" function:

http://www.theanswerbank.co.uk/Science/Questio n108940.html

[bubbly girly]

becaue that's the sea's favorite color.

[ReverieKurosaki]

it is because of wavelengths and particles. A glass of water is tinted blue but you cant see it as there isn't much water but if you look at the sea there is a large amount of water so the blue more intense so you can see it clearly.