Toothed Whales
By: Lauren Granville
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There are around 70 different
species of Toothed Whales.
Some Toothed Whales are: Sperm
whale, Bottlenose dolphin, River
dolphin, Beaked dolphin, Orca,
Pilot, Narwhal, and Beluga whale.
There is a wide distribution of Toothed Whales all over the
world.
 They can be found in deep water habitats, coastal shores,
in Antarctic seas, tropical seas, and in fresh water.
 Most migrate for food or to breed. Others, like the Sperm
whale, are said to be the wanderers of the ocean because
they inhabit oceans all over the world.
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DIET
Toothed Whales diet varies
among the different species.
 They actively hunt prey using
echolocation.
 Toothed whales have peg-like
teeth for grasping their prey.
 The whales that feed on fish,
seals, and other whales,
generally have more teeth
than the ones that feed on
invertebrates.
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Feeding Methods
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Orcas will strand themselves on a sandy beach in order to
catch and eat seals.
Bottlenose dolphins will herd schools of fish up onto a mud
bank, stranding themselves until they are finished eating.
The melon
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The melon is a fluid-filled
structure, unique to
Toothed whales.
Its located between the
blowhole and beak and is
believed to function in
echolocation.
They use the melon as an
adjustable acoustic lens.
Sperm Whales
The blowhole is usually located on the top of
the head, except for in the case of the Sperm
whale.
 Sperm whales have a blowhole that is located
on the front left-hand side of the head.
 These whales are the largest in the Toothed
whale group.
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Dolphins and Porpoises
Dolphins and porpoises are
aesthetically similar. Dolphins
are more talkative and make
whistling sounds through their
blow holes for communications;
porpoises do not.
 Both are very intelligent.
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Narwhal and Beluga
This family, Monodontidae, has only two species: the
Narwhal and Beluga whale.
 Narwhal and Beluga’s are found in arctic seas and
major rivers draining into them.
 Both lack a dorsal fin.
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Do whales sleep?
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Whether whales sleep or not remains a mystery.
Scientists believe whales rest one side of the brain at a
time. They do this by closing one eye at time before
swapping to the other eye while swimming close to the
waters surface.
In Provincetown
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http://www.kidcyber.com.au/topics/whaletooth.htm
http://www.whalesalive.org.au/aboutwhales.html
http://marinelife.about.com/od/whaleanddolphinwatching/
p/WhaleWatchingShoreCapeCod.htm
http://www.coastalstudies.org/what-we-do/stellwagenbank/toothed-whales.htm
http://animals.about.com/od/cetaceans/p/toothedwhales.htm
http://www.mobilecape.com/oldsite/whales.html
References