Dark spots in sea material

[treed]

Ok, I've never seen this before... maybe someone can help out. At times there are dark stripes in the ocean. I was wanting to do a ariel shot of the ocean but then ran into this. I tried playing with the sub surface but that has nothing to do with it. But sometimes adjusting the bump map on the material helps but when you rotate the camera they appear again.

http://www.3dluvr.com/treed/my%20stuff/i...roblem.jpg

Kresimir, you can delete the other account I made which is treed_85. I accidently made two.