Right Whale and Sperm Up to 60 Feet Finners Up to 110 Feet 1-Greenland Right Whale, Balaena Mysticeptus, up to 60 feet in length, generally found near Arctic ice. The smaller whalebone whale of the Atlantic and Southern oceans is somewhat similar in shape; it runs to 50 feet; shows tail as it dives; has no fin on back. It is called the Nordcapper or Biscayensis and Australis. 2- The Sperm or Cachalot,; Physeter Macrocephalus. A toothed whale 50 to 60 feet;; shows tail when it dives; sometimes breaches,; i.e. leaps several times in succession as it travels; blast low and projected forward. 3- Seihvale, Balaenoptera Borealis, 40 to 50 feet; blast about 10 feet; does not usually lift tail out of water before final dive; has fin on back, is therefore a "finner.; 4- Fin whale, Balaenoptera Musculus, up to 75 feet. The Blue whale Balaenoptera Sibbaldii is similar, with smaller fin on back; both make blasts about 18 feet. The Blue whale in Southern seas has been killed up to 110 feet.
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