Classroom activities based on how scientists study active volcanoes on the deep ocean floor. Activities include: locating an earthquake epicenter, recording geological and biological information during an ocean floor traverse, creating cross-section profiles of the ocean floor, and graphing seafloor data. Resources include videos and teacher guides. Full description.

Classrooms and individuals can log on to participate in a real-time field trip to a National Estuary Research Reserve. Ask questions, view live video and still images, and learn about estuaries from experts. Topics range from geology to water quality, estuary plants and animals, and cultural heritage. Includes: references and lesson plans, classroom activities and teachers' guides. Archives of previous ... Full description.

Examine the relationships between volcanic events and the chemistry and biology of hydrothermal vents on the undersea volcano Axial: daily expedition logs, curriculum materials that seek to solve an underwater mystery, photographs and fly-through video. Site also features highly-interactive dives to the seafloor (requires free Shockwave plugin). Full description.