COLORS OBSERVED WHEN SUNLIGHT IS SCATTERED BY BUBBLE CLOUDS IN SEAWATER

Colored bands photographed in sunlit subsurface bubble clouds are described. The colors are found to be associated with the transition from partial-to-total reflection by the bubbles. The most pronounced band is a red-yellow band located near the transition region. Theoretical evidence is also summarized that the colored bands observed are only weakly affected by thin coatings and the oblate shape of freely rising bubbles.