Hello, I'm trying to achieve the effect shown in this video: https://vimeo.com/204806144 [vimeo.com] around the 2 hour mark.

The flip's dynamics seem to behave perfectly as far as I can tell, but when I render I get this strange result.

The only settings I've deviated from the defaults are Ocean Spectrum Resolution Esponent to 10, wavetank Ocean Source Size to 30 12 30, and Particle Separation to 0.06.

Any ideas ?? Thanks.