For open seas, GoogleMaps use a "wave" pattern to simulate water.
Those are NOT real pictures of real water.
Evidence ? You'll find ships photographed half a mile out at sea, not a single ship photographed in the middle of the ocean.
Same thing applies to the Polar Ice caps and to the vast forest expanses in Siberia, South America and Africa, not to mention some desert spaces such as the Gobi or the Ténerè.
GoogleMaps satellites... imho do not exist, they BUY photo imagery once in a while. So it's antieconomic and absolutely pointlòess to buy photoimagery of
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rwaterwaterwaterwaterwaterwaterwaterwaterwaterwaterwaterwaterwaterwaterwater" ... when it's so expensive.
Actually, even land imagery is updated only once in a long while.
My car is pictured sitting in the same spot for years, even though I haven't parked it there ... for years.
If you tour the Alps, you'll get a laugh when you cross national borders, it may be cloudy and snowy in Austria (2-week old pics) and sunny and sumemry in Italy (6-month old pics)