https://i.ytimg.com/vi/bOawAckv3FA/hqdefault.jpg

For more information please visit the tutorial: http://www.austeregrim.com/

Settings for the ocean modifier:
Repeat X: 3
Repeat Y: 3
Time: Key framed
Spatial Size: 45
Resolution: 21
Depth: 200
Choppines: 1
Scale: 2
Smallest: 0.01
Wind V: 30
Alignment 0

With compositor effects, for glare.

source