Developed as a tool to help in the explanation of detailed scientific information this set of 12 overhead transparencies focuses on the physical properties composition and life systems of the sea, Two overlays add information about Guyots Magnetism of the Sea Floor Seismic Sea Waves Oceanic Ridge-Rise System Echo Sounding Life in the Sea Temperature in the Sea Fracture Zones Submarine Canyon Beaches/Beach Cycles Water Masses and Salinity of the Sea, American Educational Products have a lead ship time of 21 days, SKU: AMED431