Figure 4.18.  Photographs of the sea floor in areas of elevated topography, rough sea floor, and high backscatter intensity (stations 8 and 10, 11.0 and 11.5 m water depth respectively) east of Nantasket.  The pink on the boulders is calcareous algae.  The sea floor between these features is sand (stations 5, 6, 13.4 and 16.0 m water depth respectively).  See Figure 4.17b for station locations.  See Appendix 3 for additional photographs at these stations.  The field of view of each image is approximately 50 cm wide.

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