Pacific White-sided Dolphinカマイルカ

Lagenorhynchus obliquidensLC— Least Concern

The Pacific white-sided dolphin is a highly social, acrobatic dolphin of the cool-to-temperate North Pacific, ranging from the South China Sea to the Bering Sea. It typically travels in groups of around 90 individuals, though aggregations of thousands have been recorded, and each dolphin appears to carry a unique signature whistle for identification. The species is common and classified as Least Concern by the IUCN.

Pacific White-sided Dolphin (reference photo)
Photo: The original uploader was Leefon at English Wikipedia. / CC BY-SA 3.0 / Source / cropped

Species Data

Classification
Artiodactyla / Delphinidae Source
Size
Body length: males about 2.5 m, females about 2.3 m
Weight
Males about 200 kg, females about 150 kg
Lifespan
Thought to be over 40 years
Diet
Piscivore Piscivorous, feeding mainly on fish such as sardines, cod, anchovies, herring, and salmon, as well as squid
Distribution
Inhabits cool to temperate waters of the North Pacific, from the South China Sea and Baja California north to the Bering Sea, including the Sea of Japan and Sea of Okhotsk. Source
Sources
ja.wikipedia.org en.wikipedia.org

Did You Know?

  • Groups typically number around 90 individuals, but aggregations of more than 3,000 dolphins have been observed. Source
  • Each dolphin is thought to have a unique signature whistle used for individual identification within the group. Source
  • Highly active and often approaching boats, this species is known for acrobatic displays including leaps and somersaults. Source

Where to See This Species

Operating facilities registered on this site: Japan 13

How to tell Dolphins, Porpoises, and Belugas apart →

Adventure WorldWakayamaOpened in 1978

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NOTOJIMA AQUARIUMIshikawaThe nearest station is Wakura-Onsen Station.

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Maxell Aqua Park ShinagawaTokyoAbout a 2-minute walk from the Takanawa exit of Shinagawa Station (Shinkansen, JR, and Keikyu lines).

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MARINE WORLD uminonakamichiFukuokaFrom JR Hakata Station, take the Kagoshima Main Line 11 minutes to Kashii Station, transfer to the JR Kashii Line (bound for Saitozaki), and ride 20 minutes to Uminonakamichi Station.

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Echizen Matsushima AquariumFukuiOpened in 1959

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Shimoda AquariumShizuokaOpened in 1967

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Osaka Aquarium KaiyukanOsakaOpened in 1990

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Kamogawa Sea WorldChibaAbout 2 hours from Tokyo Station on the Wakashio limited express to JR Awa-Kamogawa Station, then about 10 minutes by free shuttle bus (departing from the West Exit bus stop).

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Kinosaki Marine WorldHyogoAbout 10 minutes by Zentan Bus from JR Kinosaki-Onsen Station; get off at the Hiyoriyama (Marine World) bus stop.

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ENOSHIMA AQUARIUMKanagawaOpened in 2004

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AQUARIUM ASAMUSHIAomoriOpened in 1983

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Port of Nagoya Public AquariumAichi5 minutes on foot from Exit 3 of Nagoyako Station on the Subway Meiko Line (transfer to the Meiko Line at Sakae Station on the Higashiyama Line, or at Kanayama Station on the Meitetsu and JR lines).

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Niigatashi Suizokukan MarinpianihonkaiNiigataOpened in 1990

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Former facilities

Enoshima SuizokukanKanagawaOpened in 1954

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Closed: 2004-01 Official Site

Latest news

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Conservation Story

Conservation Status

Least Concern (LC)

Sources

ja.wikipedia.org

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FAQ

How big are Pacific white-sided dolphin pods?
Groups typically number around 90 individuals, though gatherings of more than 3,000 dolphins have occasionally been observed. Source
What do Pacific white-sided dolphins eat?
They feed mainly on schooling fish such as anchovies, herring, and salmon, along with squid. Source
Are Pacific white-sided dolphins found near Japan?
Yes. Their range includes the Sea of Japan and Sea of Okhotsk as part of a broader distribution across the cool waters of the North Pacific. Source
How many operating facilities are registered here?
Operating facilities registered on this site: Japan 13 Source

Books & gear

Source: ja.wikipedia.org