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Wikipedia: Dolphins are marine mammals that are closely related to whales and porpoises. There are almost forty species of dolphin in seventeen genera. They vary in size from 1.2 m (4 ft) and 40 kg (90 lb), up to 9.5 m (30 ft) and 10 tonnes (9.8 LT; 11 ST) (the Orca or Killer Whale).
![[Bottlenose dolphins]](http://images.ookaboo.com/photo/s/Dolphins_gesture_language_s.jpg "Bottlenose dolphins")
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![[Spectrogram of dolphin vocalizations]](http://images.ookaboo.com/photo/s/Dolphin1_s.jpg "Spectrogram of dolphin vocalizations")
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 from Serguei S. Dukachev |
from Spyrogumas |
![[Fresco of Dolphins, ca. 1600 BC, from Knossos, Crete.]](http://images.ookaboo.com/photo/s/Akrotiri_dolphins_s.jpg "Fresco of Dolphins, ca. 1600 BC, from Knossos, Crete.")
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![[Spotted Dolphin.]](http://images.ookaboo.com/photo/s/Spotteddolphin1_s.jpg "Spotted Dolphin.")
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 from H-stt |
 from Toony |
![[Bottlenose dolphin.]](http://images.ookaboo.com/photo/s/Dolphintursiops_s.jpg "Bottlenose dolphin.")
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![[Keiko is weighed as he is loaded into his specially made transport tank at the Oregon State Aquarium, on Sept]](http://images.ookaboo.com/photo/s/Keiko_weighing_s.jpg "Keiko is weighed as he is loaded into his specially made transport tank at the Oregon State Aquarium, on Sept")
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from BabyNuke |
from Head |
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