BEaches that I know of in Brazil included Tambaba and Pinho. IF you search Flickr for tambaba, you get this:
http://www.flickr.com/search/?q=tambaba
there are lots of pics at Flickr, but I recall many are or were marked private. THere are also pics scattered around at OCC if you search on Tambaba. But I have found that a lot of these Brazilian beach pics are restricted in their viewing or copyrighted. Anyway, so I can steer you towards some pics, but can't guarantee you will be satisfied. And I can't give you what I have if its copyrighted or was obtained from a private collection at Flickr cheers, Klondike