Subject: Killer whales

Martine Berube (martine@newt.bio.uci.edu)
Fri, 24 Oct 1997 18:59:51 -0700

Questions: How big do killer whales get?  How much do killer whales weigh
when they are born?  How old can they get?  What places do they go when it
gets really cold?  How many babies can one whale have?

Dear Christen,
The killer whale is the largest dolphin. The male averages 27 feet and
weighs up to 11 tons; the female 23 feet, 8 tons.
The calf is about 8 ft. (2.4m) long and weighs about 300 to 400 lb.
(131-181 kg).
According to researchers, it is beleived that killer whalse can live 30 to
35 years old.
Killer whales are found more in cooler waters, especially polar regions,
than tropical and subtropical regions. They are observed in all seas
including the Western Mediterranean, Arabian Sea and the Gulf of Aden, so
they don't mind cold conditions.
A killer whale becomes sexually mature at about 6-10 years old and theydie
at perhaps 30-35 years old. Based on limited data collected from
populations at sea, a female may give birth to a calf every five years. So,
one female could have approximately five calf during her life.
Good luck with your project,
Martine

Martine Berube
Dept. of Ecology and Evolutionary Biology
University of California
Irvine, CA, 92697-2525
PHONE:714-824-8680
FAX:714-824-2181
E-mail: martine@newt.bio.uci.edu