Figure
12. Sidescan-sonar transect off the northern end of Long Beach (top panel) with bottom
photographs (bottom panel) showing the progression in bedforms from the lower beach face
to the middle shelf. Photographs from the lower beach face all show a rippled sea floor.
Sand dollars are present in one of the photographs in 16 m water depth, but note that
ripples are present among the sand dollars. On the middle shelf, the ripples are not as
sharply defined, and on the middle shelf, bioturbation has heavily reworked the ripples.
Click on the figure to view a larger image. Figure location shown in Fig.4.