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Sea foam Stock Photo
Author: Erie
Seaside Royalty Free Stock Photography
Author: Vasilkova
Leaves Royalty Free Stock Photo
Author: Elisalocci

Also, here are some commercial RF-licensed images that match your search criteria:  
Soap foam Royalty Free Stock Image
Author: Lenta

Explore more commercial options: More Foam Stock Illustrations & Vectors | More Foam Stock Video Footage