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What is the largest kind of dolphin?
Of all the aquatic mammals in the dolphin family (Delphinidae), the largest is the orca or killer whale (Orcinus orca), which can grow as long as 33 feet (10 meters). These large black and white animals are the top predators in the ocean, hunted only by humans and able to attack and kill even the largest whales. Orcas are highly social and very intelligent. They form close groups (pods) of up to 40 individuals and hunt together, often cooperating to herd the prey. They communicate with clicks, whistles, and other sounds and can recognize each other by voice. Each orca's pattern of black and white markings is also unique. Orcas are found throughout the world's oceans from the Arctic to the Antarctic, and are in no danger of extinction. In the Antarctic alone, there are an estimated 180,000 orcas.

An introduction to the orca:
http://www.enchantedlearning.com/subjects/whales/species/Orca.shtml

The Orca Foundation:
http://www.e-cafe.com/orca/

More Cool Facts about dolphins:
http://www.cool-fact.com/archive/1997/05/13.html
http://www.cool-fact.com/archive/1997/05/27.html http://www.cool-fact.com/archive/1999/10/06.html

The preceeding information was provided by The Learning Kingdom on 03/08/2000 01:00:00 AM.