Andy Adams 
Hawaiian Sea Hunt Mystery [EPUB ebook] 

When Biff Brewster’s father gets a disturbing call requesting his urgent presence in Hawaii, the family’s vacation takes an unexpected turn. Soon Biff and his friend Li are caught up in a thrilling race to locate a missing scientist, find a sunken treasure ship, and secure a valuable mineral deposit essential for space travel. With dangerous criminals also seeking the prize and perilous ocean waters to navigate, Biff and Li must stay one step ahead while tapping all their courage and ingenuity to succeed. This exotic adventure will captivate mystery lovers with its suspense, vivid setting, and plucky young heroes.