Florida students don diving helmets for underwater excursions in 1937

Title card: "Sea Class, Zoology studied under the water" / people in bathing suits with canisters and hoses on a dock at the side of water / a diving helmet is placed over the head of a young woman / CU helmet on head of laughing woman / three divers at side of dock with helmets, bare legs of others and hoses / people on dock cranking pumps / MS divers with hoses being fed to them and those on dock pumping / ground level shot of person's legs and pumping unit / underwater view of four people walking right on sand / the divers with nets as one holds a turtle / diver takes photo of another with turtle / girl pumps on deck / helmeted person underwater releases small fish / boy wrestles small alligator