This site provides an excellent explanation of the nature of tides and how they are formed. The one shortcoming is the use of the fictional "centrifugal force", but this is commonly misused in literature.

This page tells you what El Nino is, provides links to animations and videos on El Nino, explains how to recognize El Nino, and discusses the history of significant El Nino events.

The Space Environment Center put together an introduction to our sun and space weather that it creates during it's 11 year weather cycle. Learn about different solar anomalies and the effects they have on earth with pipelines, geologic exploration, and even homing pigeons and other biological systems.

This site offers definitions of the many and varied terms used to describe tides and currents.

This site introduces you to one of the most ambitious projects now studying the influence of the ocean on climate. Links are available to related sites and to sources of real-time data.

National data bases provide information on significant volcanic eruptions, volcano location, volcano images, volcanic ash advisory, and satellite monitoring of volcanoes.

Discusses doppler and nexrad radar systems and how they work. Explains the doppler effect. Describes some of the accomplishments of doppler radar and the radar signatures used to identify specific storm features like tornadoes.

This resource provides articles and information about an expedition to the Deep Slope in the Gulf of Mexico.

This resource provides photographs or video clips of the seafloor. The images are organized under the topics, geologic features, bacteria mats, hydrates and habitat. Quick Time is required.

Learn more about the technology that's involved in oceanography. This resource contains descriptions and pictures of thirteen different submersibles and remotely operated vehicles.

The National Oceanographic Data Center archives and provides public access to global oceanographic and coastal data, products, and information. Fantastic research data.

The National Weather Service offers information on the processes that make up the water (hydrologic) cycle, including evaporation and transpiration, precipitation, run-off, infiltration, and percolation. Has a good illustration and information on how long these processes take.

This multi-media site is packed with interesting information about the exploration of the undersea volcanos situated along the Marianna Arc.

This resource page has numerous links to pictures and videos of the sea floor. Topics include geologic features, habitats, bacteria mats and hydrates.