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Learn More
In Learn More the National Geographic magazine team shares some of its best sources and other information to expand your knowledge of our featured subjects. Special thanks to the Research Division.

Related Links

Visit the Florida Museum of Natural History to explore many areas of research, including shark biology, ecology, and behavior. Search this site for illustrations and photos of sharks.

IUCN Red List
The World Conservation Union assesses the conservation status of species, subspecies, varieties, and selected subpopulations on a global scale to highlight animals threatened with extinction and promote their conservation. This site lists more than 300 shark species.

Hammerhead Sharks
Why do hammerhead sharks have such unusually shaped heads? Explore this site for the latest research on hammerheads.

Jim Abernethy's Scuba Adventures
This site—from a diving veteran—offers charters for dive encounters with sharks and other species off the coast of Palm Beach, Florida, and in the waters of the Bahamas.


Allen, Thomas B. CThe Shark Almanac: A Fully Illustrated Natural History of Sharks, Skates, and Rays. Lyons Press, 1999.

Castro, Jose I. The Sharks of North American Waters. Texas A & M University Press, 1983.

Saunders, Ashley B. History of Bimini. Vol. 1. New World Press, 2002.

NGS Resources

"Meet the Sharks." National Geographic Explorer! (May 2005), 8-9.

"Tiger Shark." NationalGeographic.com, 2000.

Benchley, Peter. "Great White: Deep Trouble." National Geographic (April 2000), 2-29.

Curtsinger, Bill. "Tigers in For the Kill." National Geographic (November 1999), 28-35.

Chadwick, Douglas H. "Blue Refuges: U.S. National Marine Sanctuaries." National Geographic (March 1998), 2-31.

Curtsinger, Bill. "Close Encounters With the Gray Reef Shark. National Geographic (January 1995), 44-67.

"Close Encounters with Sharks!" National Geographic World (September 1990), 22-27.

Benchley, Peter. "The Bahamas: Boom Times and Buccaneering." National Geographic (September 1982), 364-95.