Maths encyclopedia and lessons  
Search

Mathematics Encyclopedia and Lessons

 
     
 

Lessons

Popular
Subjects

algebra
arithmetic
calculus
equations
geometry
differential equations
trigonometry
number theory
probability theory
more
 

References

applied mathematics
mathematical games
mathematicians
more
 
 

White-beaked Dolphin

(Redirected from White-Beaked Dolphin)


|- | style="text-align:center;" | White-beaked Dolphin range
White-beaked Dolphin range The White-beaked Dolphin (Lagenorhynchus albirostris) is a marine mammal belonging to the family Delphinidae (dolphins) in the suborder of the Odontoceti, or toothed whales. The White-beaked Dolphin is one of the larger dolphins (1.1-1.2m at birth growing to around 3 metres at adulthood). The dolphin is characterized by its short thick creamy-white beak and very falcate (curved) dorsal fin. The White-beaked Dolphin is endemic to the North Atlantic Ocean and is found in a band stretching across the ocean from Cape Cod, the mouth of the St. Lawrence River and southern Greenland in the west, around Iceland in the centre and across in the west from northern France to Svalbard. The White-beaked Dolphin is not as well adapted to Arctic conditions as the beluga or narwhal The dolphin may easily be mis-identified as the Atlantic White-sided Dolphin although the White-beaked is commonly found further north. The White-beaked Dolphin is also typically larger and does not have yellow streaks on its side. The population, breeding pattern and life expectancy of the dolphin are all unknown although most sources estimate several hundred thousand individuals, more densely populated in the eastern North Atlantic than the west.

White-beaked Dolphins are acrobatic and social animals. They will frequently ride on the bow-wave of high-speed boats and jump clear of the sea's surface. The White-beaked Dolphin is a social feeder and has frequently been observed feeding with Orca and Fin and Humpback Whales as well as other dolphin species.

References

  • Whales Dolphins and Porpoises, Mark Carwardine, Dorling Kindersley Handbooks, ISBN 0751327816
  • National Audubon Society Guide to Marine Mammals of the World, Reeves, Stewart, Clapham and Powell, ISBN 0375411410

01-04-2007 01:18:14
The contents of this article are licensed from Wikipedia.org
under the GNU Free Documentation License. How to see transparent copy