التالي
Understanding oceans [videorecording].
Silver Spring, MD : Discovery Education, c1997
1 videodisc (51 min.) : sd., col. ; 4 3/4 in.
This video explores the mystery of the ocean's environment through interviews with marine experts, a brief interview with Thor Heyerdahl, and dramatic footage of the undersea world. It discusses ocean tides and currents including the El Nino and the affect oceans have on the earth's climate and weather ; ALACE, the mid-depth ocean current robot ; medical research on marine life for life-saving chemicals ; the affects of pollution on the oceans and how people, including surfers, are beginning to clean-up and monitor the ocean environment.