for water and any water surfaces outside studio, use the BIG ball with a picture from [outside] as I did in image above for the atmosphere of your scene. rescale the ground and see the setting of the reflection, use turbulence node for the waves, or animated bump maps for animations. If you use the not deep water you need to use refrect node also as in post #16 but as color under the Edge Blend use just white. You can also make it transparent a 50% if you set in figure :P :)

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"Surrender to what it is - Let go of what was - Have faith in what will be "