A young diver writes to John Stoneman while she is working on a whale research project in Hawaii. In her letter, the girl explains that she has been so motivated by the work that Stoneman is doing to inform others of the fragile nature of the sea that she would like to devote her life to the same concerns. Moved by the sensitive nature of the letter, Stoneman invites the girl to join him and his crew to assist in their present research. This once in a lifetime opportunity proves to be an exciting learning experience for the neophyte diver and one that she will never forget.