Gypsy Secret: Children of sea see clearly underwater

For hundreds of years, small nomadic tribes called sea gypsies have lived among the islands of Southeast Asia, earning fame for their swimming and diving skills. Sea-gypsy children regularly collect food such as clams and sea cucumbers off the ocean floor. A research team studying one sea-gypsy tribe has now found that its children have better-than-normal underwater vision because their eyes adapt to the liquid environment.