The Pacific Ocean off the west coast of North America - ranging from the south coast of Alaska to the Equator - encompasses many marine environments, from warm tropics to cold temperate waters, and from the shallow continental shelf to deep ocean canyons. A diverse number of marine mammals have adapted characteristics to survive and prosper in each of these environments. Beaked and sperm whales spend their time in the deep ocean. Most dolphin species favour warmer waters, while a few prefer cooler climes. Porpoises avoid the tropics altogether. Harbour seals stay near the temperate coast, as...
The Pacific Ocean off the west coast of North America - ranging from the south coast of Alaska to the Equator - encompasses many marine environments, ...
