The Seafloor

The seafloor is vast and diverse—from hard to soft bottom, cracks and crannies and mountainous ranges—and supports an equally diverse community of animals and microbes.



Integrated Ocean Drilling Program

Scientists from the Integrated Ocean Drilling Program (IODP) collect sediments drilled from Earth’s crust. This marine...
a colored shakemap from the M5.8 Virginia Earthquake depicts the shake range and epicenter of the earthquake

A Guide to Earthquake Lesson Plans

On August 23, 2011 a 5.8 earthquake emanated from the little-known Central Virginia Seismic Zone. The epicenter was near Mineral, VA, but the tremor shook homes, schools, and office buildings in Washington, DC and...