Dr. Beach judges beaches primarily based on 50 standards, including sand softness, wind pace, water temperature, presence of runoff, public security, rip currents, and pollution. On Kauai, one of many islands in Hawaii, more than 70 % of the beach is eroding, partly because of development of seawalls and jetties, and from clearing out stream mouths. Geologists say Oahu, another Hawaiian island, has misplaced 25 p.c of its shoreline. Tourism is the state’s major business, so disappearing seashores are a significant concern. The destruction of Hawaii’s beaches might also imply a loss of habitat for many crops and animals, a few of which are already endangered. As extra buildings and different services are built, beaches become narrower and narrower.