Cawsand Bay is a sheltered Cornish shore dive on the west side of Plymouth Sound where a sandy bottom and rocky outcrops give you an easy read on the site. The inner bay works as a straightforward shore entry, while the outcrop near the old slipway can turn into a useful drift when the tide runs out of the bay. Plan around the tide if you want the moving-water section, and expect a compact temperate dive with small coastal life rather than tropical reef scenery.