Electronic fish finder

Sophisticated sonar and depth sounding have been indispensable to commercial fishermen since the 1970s. Blobs above an outline of the sea floor reveal schools of fish, so that fishermen know where and how deep to drop nets §.
courtesy of Raytheon Marine Company

Ocean Planet Exhibition Floorplan

gene carl feldman (gene@seawifs.gsfc.nasa.gov) (301) 286-9428

Judith Gradwohl, Smithsonian Institution (Curator/Ocean Planet)