NOAA
Noaa: Ne Mo: Hydrothermal Vents
Clearly describes hot springs on the ocean floor called hydrothermal vents. Details characteristics of the vents and how they work.
TED Talks
Ted: Ted Ed: On Exploring the Oceans
Ocean explorer Robert Ballard takes us on a mindbending trip to hidden worlds underwater, where he and other researchers are finding unexpected life, resources, and even new mountains. He makes a case for serious exploration and mapping....
A&E Television
History.com: 10 Things You May Not Know About Christopher Columbus
Check out 10 things you may not know about the explorer who sailed the ocean blue in 1492 for example, Columbus didn't set out to prove the earth was round.
Soylent Communications
Notable Names Database|nndb: Vasco Nunez De Balboa
A brief biography of one of the successful Spanish conquistadors, Vasco Nunez de Balboa. He is recognized for his discovery of the Pacific Ocean and land in the Americas.