The following are some internet sites for learning about the nature and geologic history of the ocean floor. Learn how several decades worth of drill cores from the ocean floor have confirmed the theory of plate tectonics and taught geologists much about the climate history of the Earth.

http://imager.ldeo.columbia.edu/
The Ocean Floor Databases web page of the Lamont Doherty Earth Observatory in Palisades, New York offers images, data, and general information about their many ocean-floor research projects. Included on this website are a variety of mpeg and quicktime movies illustrating regions of the ocean floor.

http://www.joides.geomar.de./
Web site for the Joint Oceanographic Institutions for Deep Earth Sampling (JOIDES) which operates out of Woods Hole Oceanographic Institution in Massachusetts. Since 1964, JOIDES has been investigating the geologic history of the ocean floor through deep sea drilling projects.

http://www-odp.tamu.edu/
Worldwide web site for the Ocean Drilling Program (ODP), which investigates the nature and history of the ocean crust.

http://www.ngdc.noaa.gov/mgg/mggd.html
The Marine Geology and Geophysics Division of the National Oceanic and Atmospheric Administration's (NOAA) National Geophysics Data Center (NGDC) maintains archives for geological and geophysical data relevant to marine geology studies.

http://gs.ucsd.edu/gc/
The geological collections at Scripps Institution of Oceanography at the Univerity of California at San Diego provides images and information about their collection of deep sea drill cores and dredge hauls from around the world's oceans.

http://www.pmel.noaa.gov/vents/
This NOAA website is devoted to the study of deep sea hydrothermal vents.

http://www.ngdc.noaa.gov/mgg/image/seafloor.html
Measured and Estimated Seafloor Topography Site by David T. Sandwell, Walter H. F. Smith, Stuart M. Smith, and Christopher Small of the Institute for Geophysics and Planetary Physics, SIO, Geodynamics Laboratory, NOAA. This site contains detailed maps of continental and seafloor topography and mpeg movies simulating flyovers of ocean floor features such as midocean ridges.

http://gdcinfo.agg.nrcan.gc.ca/toc.html?/app/agegrid.html
This web page from Natural Resources, Canada contains downloadable maps showing the ages of the ocean floor crust around the globe.

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