Weird noise clipping

Maya
1

im trying to make a small clip where bubbles bubble up from the depth. But when they reach the surface and the bubble is within the ocean surface it creates this weird noise, some sort of clipping problem I think. Im using an ocean and a wake the bubbles are polygons with a blin shader and the ocean has an ocean shader. Bouth have raytrace reflections and refractions.

http://www3.hku.nl/~menno4/raar.jpg

i have tried to render it in mental ray and then the weird noise was gone, but the ocean was realy pixelated.

http://www3.hku.nl/~menno4/raarray.jpg

Hopefully someone can help me solve this problem,
Menno

2

it looks like the noise you might find on a fluid when you need to turn the Shading Quality up on the fluidShape node... but that doesn make sence if you are using an ocean... are you sure you are not using a pond? The only reason I ask is that it looks just like the spring mesh solver from a pond.