Temperate Northern Pacific

A pair of orcas breaching off the southern coast of Unimak Island, Alaska

The Temperate Northern Pacific is a biogeographic region of the Earth's seas, comprising the temperate waters of the northern Pacific Ocean.

The Temperate Northern Pacific connects, via the Bering Sea, to the Arctic marine realm, which includes the polar waters of the Arctic Sea. To the south, it transitions to the tropical marine realms of the Pacific, including the Tropical Eastern Pacific along the Pacific coast of the Americas, the Eastern Indo-Pacific in the central Pacific Ocean, and the Central Indo-Pacific of the western Pacific basin. The Taiwan Strait forms the boundary between the Temperate Northern Pacific and the Central Indo-Pacific.

Characteristic fauna include the Pacific salmon and trout (Oncorhynchus spp.), gray whale (Eschrichtius robustus), and North Pacific right whale (Eubalaena japonica).

Subdivisions

The Temperate Northern Pacific is further subdivided into marine provinces, and the marine provinces divided into marine ecoregions:

Cold Temperate Northwest Pacific

• Sea of Okhotsk
• Kamchatka Shelf and Coast
• Oyashio Current
• Northern Honshu
• Sea of Japan
• Yellow Sea

Warm Temperate Northwest Pacific

• Central Kuroshio Current
• East China Sea

Cold Temperate Northeast Pacific

• Aleutian Islands
• Gulf of Alaska
• North American Pacific Fjordland
• Puget Trough/Georgia Basin
• Oregon, Washington, Vancouver Coast and Shelf
• Northern California

Warm Temperate Northeast Pacific

• Southern California Bight
• Cortezian
• Magdalena Transition

References

• Spalding, Mark D., Helen E. Fox, Gerald R. Allen, Nick Davidson et al. "Marine Ecoregions of the World: A Bioregionalization of Coastal and Shelf Areas". Bioscience Vol. 57 No. 7, July/August 2007, pp. 573–583. [1]

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