Coast Guard Beach, accessible by bicycle or via shuttle bus from the Salt Pond Visitor’s Center, was formed where a sand spit attached to the eroding glacial cliffs.  The sand is fairly coarse, so the beach slopes steeply into the water.  The picturesque old Coast Guard station still sits atop the glacial bluffs, allowing for a spectacular view down upon the Nauset Spit barrier system and bay.  During the summer, beach-goers take quick, refreshing dips in the ocean, as water temperatures only reach 60-70 degrees.