Dolphins, Manatees, and Whales

Cetacean Watching
Whale watching search engine combined with contextually-relevant information on whale, dolphin, and porpoise species.
http://www.cetaceanwatching.com/

Marine Mammal Viewing Guidelines
Guidelines and regulations to reduce the potential for wildlife viewing to inadvertently harm whales, dolphins, porpoises, seals and sea lions.
http://www.fakr.noaa.gov/protectedresources/mmv/guide.htm

Sea Quest Expeditions
Biologist guides lead kayak trips to see marine orca whales in the San Juan Islands of Washington, gray whales in British Columbia, humpbacks in Alaska, and blue whales in Baja, Mexico.
http://sea-quest-kayak.com/

Ultimate Pelagics
Whale, dolphin and sea bird watching trips from the Uk aboard a fully dedicated luxury cruise ship to the Bay of Biscay and Southern Ireland.
http://www.ultimatepelagics.com

Whale Guide
Directory of whale and dolphin watching activities around the world with supporting information about cetaceans and other aquatic animals.
http://www.whaleguide.com

Wild and Free
Schedules and rates for whale and dolphin watching and swimming tours worldwide.
http://www.dolphinswims.co.uk