Chapter 8 Fluid Dynamics in Seagrass Ecology
211
Fig. 9. Lightflecks form in areas where the surface of the water is not flat, instead, it has waves (A). The light that reaches the water
surface (vertical arrows above wave) is focused by wave crests and is dissipated by wave troughs. In the area where the light is focused,
lightflecks form. Under the right combination of water depth and wavelength (i.e. water depth in the focusing range), lightflecks can be
observed on the seafloor as seen in a shallow Thalassia testudinum bed in the Florida Keys, USA (B). Photo: E.W. Koch.
211
Fig. 9. Lightflecks form in areas where the surface of the water is not flat, instead, it has waves (A). The light that reaches the water
surface (vertical arrows above wave) is focused by wave crests and is dissipated by wave troughs. In the area where the light is focused,
lightflecks form. Under the right combination of water depth and wavelength (i.e. water depth in the focusing range), lightflecks can be
observed on the seafloor as seen in a shallow Thalassia testudinum bed in the Florida Keys, USA (B). Photo: E.W. Koch.