This w sighting was in Cancun Mexico:

On 7 February 2023 around 10p my wife and I were sitting on the observation / smoking deck area of Royal Solaris, cancun Mexico, which is situated 75-100 ft from the water.
We witnessed a perfectly round metallic object (size of small car) to the south of us. The object appeared to be gliding at a high rate of speed, along the coast, 20 ft over the ocean surface and probably 150-200 ft from us. We watched in awe as the metal sphere silently glided past us. When it got well past us it sped off like Star Wars light speed, but no after rocket boom or even light. Just disappeared.

Upon coming to terms with what we just saw, we realized the wind (heavy winds that night) was traveling along the shore north to south. How was this object able to travel the speed that it was, the straight line it was traveling and no fluctuations in movement.

No markings, windows, etc.