The order Cetacea includes whales, dolphins and porpoises. Cetus is Latin and is used in biological names to mean "whale"; its original meaning, "large sea animal," was more general. It comes from Greek ketos ("sea monster"). Cetology is the branch of marine science associated with the study of cetaceans.
Cetaceans are the mammals most fully adapted to aquatic life. Their body is fusiform (spindle-shaped). The forelimbs are modified into flippers. The tiny hindlimbs are vestigial; they do not attach to the backbone and are hidden within the body. The tail has horizontal flukes. Cetaceans are nearly hairless, and are insulated by a thick layer of blubber.
The order Cetacea contains just over eighty species, divided into two suborders, Mysticeti (baleen whales) and Odontoceti (toothed whales, which includes dolphins and porpoises).
More on [ Cetacea ]
Whales :: Mammals
Marine Mammals :: Mammalogy
Cetaceans :: Marine Mammals
Whales :: Specific Animals

Cetacea - Information on all of the world's whales, dolphins and porpoises.
Meta Description: [ Cetacea - the world's whales, dolphins and porpoises all on one site ]
Cetacea: Whales, Dolphins, and Porpoises - Comprehensive description of the order and its various families from the online book Walker's Mammals of the World by Ronald Nowak.
Cetacean Encyclopaedia - Provides species-specific information in encyclopedia format.
Meta Description: [ By watching the whales you can prolong the life of cetaceans as a species. ]
Cetaceans: The Whales and Dolphins - Species list and links.
Cetonaut - Links to pages about human-cetacean interactions in the wild.
Meta Description: [ Cetonaut.com : the site about cetonauts, whales, dolphins and human-cetacean interactions in the wild ]
Classification of Whales - Overview of whale species, with common names in 10 languages.
Meta Description: [ Overview of whale species ]
Deafwhale Society - Organization dedicated to explaining why whales mass strand themselves on beaches around the world.
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Dolphin Dreams UK - Includes information on whales and dolphins, Keiko, killer whales, dolphin behavior, and the latest whale and dolphin news.
Dolphin Institute - Education, research, and conservation of bottlenose dolphins and humpback whales in Hawaii. A not-for-profit arm of the Kewalo Basin Marine Mammal Laboratory of the University of Hawaii, located in Honolulu.
Meta Description: [ The Dolphin Institute and the Kewalo Basin Marine Mammal Laboratory: Dedicated to Dolphins and Whales through Education, Research, and Conservation. Over 20 years Dolphin Research and Humpback Whale Research, based in Honolulu, Hawaii. Browse our extensive educational area to learn about marine m... ]
Dolphins and Whales in Greece - Descriptions and images of all Greek cetaceans.
Eastern Caribbean Cetacean Network - A volunteer network that records sightings and strandings of marine mammals in the Eastern Caribbean. Includes information on marine mammals of the Caribbean and educational resources.
Meta Description: [ Sightings, strandings and information on whales of the Eastern Caribbean ]
Fairweather Adventures - About Whales - Information provided by an Alaskan whale-watching tour company, mainly on humpback and killer whales.
Meta Description: [ Fairweather Adventures, located in Gustavus, Alaska offers their guests a unique kayaking and photography tour guided by Captain Jim Kearns. ]
Frontline: A Whale of a Business - A story covering the controversy over whales in captivity.
Meta Description: [ FRONTLINE investigates marine theme parks like Sea World, and the controversy over whether captive marine mammals like Keiko, star of the movie Free Willy, should be set free. ]
Hebridean Whale and Dolphin Trust - Research on the whales, dolphins, and porpoises found in the waters of the Hebrides, Scotland. Includes fact sheets for 21 species.
Hervey Bay Whales - Information, sounds, and photos of the whales that frequent Hervey Bay, Queensland, Australia.
Meta Description: [ Whale facts, information, sounds, awesome pictures and postcards for whales enthusiasts. Put together for you at Hervey Bay, Queensland, Australia. ]
How Stuff Works: How Whales Work - Photographs and information about whales and how their bodies operate.
Meta Description: [ Whales are some of the largest living things on the planet. Learn about whales and find out how whales are able to sleep and withstand the pressures of the ocean. ]
Kona Whale Watch - General information about Hawaii's cetaceans and specific information on humpback whale sightings off the Kona Coast of Hawaii.
Meta Description: [ Kona Whale Watch - News and images on whale sightings off the Kona, Hawaii coast, updated daily ]
Mingan Island Cetacean Study - Research adventures with blue, fin and humpback whales in the Gulf of St. Lawrence, Quebec, Canada, and in the Sea of Cortez, Mexico.
Meta Description: [ Non-profit dedicated to ecological studies of marine mammals Québec North Shore Mingan Island Sea of Cortez Baja California Mexico Blue whale Pictures ]
Order Cetacea - Introduction from the Animal Diversity Web.
Phillip Colla's Whale Photographs - Underwater photographs of six species of whales.
Meta Description: [ Whale Photos and Dolphin Photos, Photographs of Cetaceans, Phillip Colla Natural History Photography ]
Tethys Research Institute - Research and conservation of Mediterranean whales and dolphins.
Whale Museum - Located in Friday Harbor, Washington. Mission is to increase the public's understanding and appreciation of the marine environment with special emphasis on whales.
Meta Description: [ The Whale Museum promotes stewardship of whales and the Salish Sea ecosystem through education and research. ]
Whale Sightings - Photos, stories, and interactive forums related to the marine wildlife off the coast of New Hampshire, USA.
Whale Songs - Information and trivia about cetaceans.
Whale Watching Web - Whale and whale-watching resources and links, with a guide to whale watching, photos, and sound files.
Whale Web - Wide range of information on all cetaceans, along with other resources and discussion boards.
WhaleNet - Educational site that focuses on whales and marine research.
Whales at Manly - Information about whale migration up the east coast of Australia.
Meta Description: [ Manly is the is the gateway to the beautiful Northern Beaches of Sydney ]
Whales on the Net - Extensive site that includes a photo gallery, fact sheets, FAQ, news, views, action updates, and links.
Meta Description: [ Discover the Blue whale, the Right whale, the Sperm whale, Humpback whale, Sei, Gray, Bowhead, Fin, Minke, Orca, Dolphins and more. ]
Whales on the Net - Discovering Whales - Detailed accounts for many species of whales and a full species list of the Order Cetacea.
Whales Online - Reference and news site about all whale species.
Meta Description: [ Whales on-line is a reference and news site dedicated to education for the conservation of whales of the St. Lawrence and their natural habitat. ]
Whales: An Educational Resource - A thematic unit for cooperative learning across an integrated curriculum.
Whitebeaked Dolphins Research - An expedition and research project studying whitebeaked dolphin populations in the North Sea.
Witness for the Whales - Method to identify cetacean species by submitting a DNA sequence to receive an estimate of similarity to species in the reference collection at the University of Auckland, New Zealand.
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