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There are at least three distinct subspecies: B. m. musculus of the North Atlantic and North Pacific, B. m. intermedia of the Southern Ocean and B. m. brevicauda (also known as the pygmy blue whale) found in the Indian Ocean and South Pacific Ocean.B. m. indica, found in the Indian Ocean, may be another subspecies.lue whales were abundant in nearly all the oceans on Earth until the beginning of the twentieth century. For over a century, they were hunted almost to extinction by whalers until protected by the international community in 1966.
Geographic Range. Bluefin tuna are distributed throughout the Atlantic and Pacific Oceans in subtropical and temperate waters. In the western Atlantic Ocean, they are found from Labrador, in Canada, to northern Brazil, including the Gulf of Mexico.In the eastern Atlantic Ocean, they are found from Norway to the Canary Islands.In the western Pacific Ocean, they are found from Japan to the Philippines.luefin tuna are usually between .5 and 2.0 meters in length. They weigh on average between 136 kg and 680 kg (Agustin, et al., 2005; Figaro, 2005; Gardieff, 2005; Jeffries, 2005; Marinebio.org, 2005; Miyashita, et al., 2001; Scott, 1997; Tudela, 2001).