If you live in a country with no coastline, you do not have a big choice with blues, although I dare say that the Pacific is blue. The Atlantic seems to be more into green and grey, from my experience of flying over it. I took this photo along our river Aar on the opposite bank in the grounds of the large swimming pool(s). Perhaps the background is a pacific blue, no idea. I am not sure what the strange figure is, perhaps a swimmer drying off in a bathing towel.