The planet Earth as seen from outer space is a blue and white ball.
No, the blue color of the Earth when seen from outer space is given by the atmosphere, not by the water on it.
no building can be seen by outer space that's impossible
No.
None
Las Vegas
Astronaughts.
Great Barrier Reef.
YES
Yes, on a clear day.
The earth, when seen from outer space, is blue, white, green, and brown. However, if you are talking about the soil earth, it can be pretty much any color.
Blue whales still exist today, but they are rarely seen, sadly.