Scene created from beachwaves example.
https://vimeo.com/328501409/e4d22c5147
Your liquid looks quite low res. Does it get better if you increase the resolution?
Have you changed the compression value for the caches?
Well, Svetlin has the scene 
I don’t think that distribution will get any better if resolution increase. There’s about 20million of water.
edit
Here’s 36 million and compression 20.
Try the mesh smoothing using particles and try adjusting the particle size parameter - the liquid particles must be distributed equally so that many of the simulation functions would work, so it’s all about the meshing in this case.
Well, I just thought beachwaves example was tweaked to avoid such meshing initially. Maybe add surface tension ?
Sure, more surface tension also sounds good. The example does not interact with such geometry that would allow such patterns to emerge, so enabling surface tension or additional mesh processing would only slow it down.
I wonder will droplet surfing lower that patterns?
Back to the scene - foam goes backwards
Any thoughts why ?
There is only one reason - the velocity points that way in this particular setup. Anything non-default in the ocean tex?
Well, I just changed ocean level and rised foam interaction.