dcsimg

Reproduction

provided by Animal Diversity Web

Key Reproductive Features: gonochoric/gonochoristic/dioecious (sexes separate); sexual

license
cc-by-nc-sa-3.0
copyright
The Regents of the University of Michigan and its licensors
bibliographic citation
Myers, P. 1999. "Physeteridae" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Physeteridae.html
photographer
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
original
visit source
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Animal Diversity Web

Behavior

provided by Animal Diversity Web

Perception Channels: tactile ; chemical

license
cc-by-nc-sa-3.0
copyright
The Regents of the University of Michigan and its licensors
bibliographic citation
Myers, P. 1999. "Physeteridae" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Physeteridae.html
photographer
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
original
visit source
partner site
Animal Diversity Web

Morphology

provided by Animal Diversity Web

Other Physical Features: endothermic ; bilateral symmetry

license
cc-by-nc-sa-3.0
copyright
The Regents of the University of Michigan and its licensors
bibliographic citation
Myers, P. 1999. "Physeteridae" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Physeteridae.html
photographer
Phil Myers, Museum of Zoology, University of Michigan-Ann Arbor
original
visit source
partner site
Animal Diversity Web

Description

provided by World Register of Marine Species
The sperm whale is the largest toothed cetacean and has the highest degree of sexual dimorphism. There is a low dorsal hump, followed by a series of crenulations. It has a large head with a squarish profile, narrow underslung lower jaw, and functional teeth only in the upper haw (these fit into sockets in the upper jaw). The blowhole is located at the left front of the head. The head is highly modified, and is divided into sections called the 'junk' and the spermaceti organ, or 'case'. The spermaceti organ is a large oil-filled reservoir, the function of which is controversial. Sperm whales have a dish shape to the facial area of the skull, extreme cranial asymmetry, and a long rostrum. Sperm whales are known to be capable of very deep, long dives. <123>
license
cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
MASDEA (1997).
i18n: Contributor
Edward Vanden Berghe [email]