An overview from Ocean Explorer of the the marine crustacean, Krill. Includes info about life cycle, habitat, behavior, environmental importance and images.

A wealth of facts is presented in this article on the Arctic Ocean. Content covered includes the area, natural resources, climate, terrain and much more.

Clearly describes hot springs on the ocean floor called hydrothermal vents. Details characteristics of the vents and how they work.

A biography of 16th century Spanish explorer and conquistador Francisco Pizarro, who traveled with Vasco Nunez de Balboa and helped to discover the Pacific Ocean. Pizarro also conquered Peru and founded the city of Lima there.

Learn all you wanted to know about sponges. And see video clips as well as photos from The Sponge Reef Project, NOAA Ocean Explorer, National Geographic and more.

Use this site to learn about the millions and trillions of gallons of water that covers the earth, known as the hydrosphere.

Deep under the ocean there is no light for plants to perform photosynthesis. This site is a good overview of the alternative energy method, chemosynthesis. Read all about it.