Go with the flow! The eighth installment in a 13-part series has earth science students dive in to the world's system of ocean currents. The interactive illustrates the different types and depths of currents, how wind and gravity...

Can Earth's oceans produce a steady supply of clean energy? Scholars explore the uses of tidal and thermal energy in the 11th installment of a 13-part series about ocean-based alternative energy sources. Learners examine the...

Show me what you know about the sea. Learners answer 10 questions about marine biology. The questions range from what evidence points to the origin of life to the biggest threat to oceans.

A great resource for explaining and understanding tides. Find out what tides are and why it is so important to monitor them. This is an extensive tutorial followed by a set of review questions. All of the information can be downloaded as...