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==Sperm Whale Cow and Calf== | ==Sperm Whale Cow and Calf== | ||
(''Physeter macrocephalus'') | |||
These whales were given their common name because of a waxy liquid called "spermaceti" located in their head (their name has nothing to do with sperm or spermatozoa). | |||
===Sperm Whale Facts=== | |||
* Sperm whales live at least 60-70 years. | |||
* Sperm whales form “nursery schools” that contain between 20 and 30 whales; females, calves, and juveniles (male and female). | |||
* The brain of a sperm whale is the largest of any animal, about 9 kilograms. | |||
* Adult males (bulls) reach more than 15 metres (50 feet) in length and weigh 54,400 kilograms (120,000 pounds, 60 tons). | |||
* Adult females (cows) reach more than 11 metres (36 feet) and weigh 25,000 kilograms (55,000 pounds, 27.5 tons). | |||
* Newborn (calves) are about 4 metres (13 feet) long and weigh only 1,000 kilograms (2,200 pounds, 1.1 tons). | |||
** a calf is born to a female only every 4 to 6 years. | |||
** calves stay with the mother for between 1 and 2 years. | |||
(Data: [http://www.nmfs.noaa.gov/pr/pdfs/education/kids_times_whale_sperm.pdf NOAA USA PDF]) | |||
:'''Links:''' [[K12_Animal_Development_Times|K12 Animal Development Times]] | |||
==Copyright== | ==Copyright== | ||
Latest revision as of 09:46, 1 April 2013
Sperm Whale Cow and Calf
(Physeter macrocephalus)
These whales were given their common name because of a waxy liquid called "spermaceti" located in their head (their name has nothing to do with sperm or spermatozoa).
Sperm Whale Facts
- Sperm whales live at least 60-70 years.
- Sperm whales form “nursery schools” that contain between 20 and 30 whales; females, calves, and juveniles (male and female).
- The brain of a sperm whale is the largest of any animal, about 9 kilograms.
- Adult males (bulls) reach more than 15 metres (50 feet) in length and weigh 54,400 kilograms (120,000 pounds, 60 tons).
- Adult females (cows) reach more than 11 metres (36 feet) and weigh 25,000 kilograms (55,000 pounds, 27.5 tons).
- Newborn (calves) are about 4 metres (13 feet) long and weigh only 1,000 kilograms (2,200 pounds, 1.1 tons).
- a calf is born to a female only every 4 to 6 years.
- calves stay with the mother for between 1 and 2 years.
(Data: NOAA USA PDF)
- Links: K12 Animal Development Times
Copyright
http://en.wikipedia.org/wiki/File:Mother_and_baby_sperm_whale.jpg
http://www.flickr.com/photos/barathieu/7277953560/
Image: Gabriel Barathieu
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
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