John R.K. Clark, a former lifeguard and retired deputy fire chief of the Honolulu Fire Department, is the author of numerous books on Hawai‘i’s beaches and shoreline history, including North Shore Place Names: Kahuku to Ka'ena, Hawaiian Surfing: Traditions from the Past, Hawai‘i Place Names: Shores, Beaches, and Surf Sites, Guardian of the Sea: Jizo in Hawai‘i, and his bestselling series on Hawai‘i’s beaches.