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The General Information will
help all groups. Specific information for your area is found under each topic.
LEARN TO USE ADVANCED SEARCH ON
GOOGLE TODAY! Use "cache" too!
The questions (and answers) below the table provide information you should know
also.
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General
Description
a. Life
span
b. size
at birth/ adult
c. rate
of growth
d. Differences
between male/female
e. Body
parts descriptions (mouth, organs)
f. Why
are they considered a mammal
g.
population size and where are they found |
General Information:
AMERICAN
CETACEAN SOCIETY FACT SHEET
http://www.acsonline.org/factpack/graywhl.htm
World
Book Go to www.worldbookonline.com
id and password cohos1 salmon
Gray
Whale - San Francisco State University
What
is a California Gray Whale?
GRAY
WHALE: ZoomWhales.com
Includes
information such as size, diet, known predators, vocalization, migration,
reproduction, and social behavior (student made site)
Gray
Whale -- Kids' Planet -- Defenders of Wildlife
The
Gray Whale Eschrichtius robustus Page
General
Information
Migration
& Distribution
Current
Research
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Breeding
grounds and development
a. Age
they breed at
b. When,
where and how
c. Gestation
Period and birthing area
d.
Development of young |
San
Diego Museum Natural History Guide/ Gray Whales
GRAY
WHALE: ZoomWhales.com
|
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Migration
routes and family structure
a. Why, when, where do they migrate
b. Do they travel in groups, how, when and why (social structure)
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http://www.learner.org/jnorth/spring2003/species
Gray
Whale's Migration Route - Channel Islands Harbor, Oxnard
Social
Structure
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Feeding
behavior and diet
a. What, how, when,
where
(movement
while feeding?)
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Feeding
Behavior
Food and
Feeding Behavior
Feeding
and Prey |
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Communication
and sensing
a. vocal
b. range of
communication
c. body
language
d. senses
|
ASK
Archive 1997: Whale Communication
... Gray and right whales also breach
to communicate, play etc. Whales may
also breach in response to an injury or when finding food. ...
whale.wheelock.edu/archives/ask97/0059.html -
6k - Cached
- Similar pages |
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Dangers
that threaten them today
a. Predators or
disease
b. Problems with man
in the past/present
c. Laws that protect
them
d. How has their population changed in the past 100 years?
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Whale
Lice and Barnacles
Predators
http://www.montereybaywhalewatch.com
Killer
Whales
Killer
Whales 2
Global
and Environmental Threats
Gray
whale extinction lies in Shell's hands
Environmental Data Interactive, UK -
4 hours ago
... should be suspended before they drive the
critically endangered gray whale into extinction ...
had planned a large-scale offshore oil and gas development off the ...
Shell
Project May Doom Western Gray Whale to Extinction, Says ...
U.S. Newswire (press release)
Sakhalin
Whale Report Urges Prudence Scoop.co.nz
(press release)
Report
to determine whale threat Green
Consumer Guide
Environment
News Service - Reuters -
all
58 related » |
FAQ's About Gray Whales
(copied outright from the Journey North)
Students' Questions, Experts' Answers
(Tip
for Teachers)
Characteristics
Life Cycle
Ecology
Food
Behavioral Adaptations: Migration
Conservation
Copyright 2001 Journey North. All Rights Reserved. Please
send all questions, comments, and suggestions to jn-help@learner.org
·Gray whales are known for spyhopping, breaching, lobtailing and surf riding.
·Gray whales are bottom feeders that are "right-handed" - they roll
their heads to the right, though some are left-handed, as they suck up sediments
with amphipods, filtering out water through their baleen plates using their
large tongues. · Gray whales were once called "Devilfish", a name
given by Yankee whalers to describe how gray whale cows protected their young,
by frequently chasing or attacking whalers. · Gray whale calves are born with
dark gray skin and no whale lice or barnacles. Very soon after birth, they
become populated by oceanic "hitchhikers" – whale barnacles and
lice. These parasitic organisms cause light gray scar patches on the skin. Other
scars are caused by Killer whales, a Gray whale predator. Each gray whale has a
unique scar pattern.
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Q- Do whales sleep?
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A- Yes, but not in the same way that humans do.
Whales continue to swim while they are resting, leading some
scientists to believe that they only let half their brain sleep at a
time.
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Q- How big are gray whales?
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A- Grey whales are relatively large whales. An
average Gray whale is twice the size of a killer whale and half the
size of a blue whale. They can reach a length of 10-13 meters and
weigh as much as 22-38 tonnes.
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Q- Where do gray whales go when they migrate?
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A- Gray whales spend their winters in Mexico and
their summers in Alaska. When migrating, they travel in groups of
1-5 and cover an average of 125km a day.
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Q- What do Gray whales eat?
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A- Gray whales are mainly bottom feeders. About 90%
of their diet consists of amphipod. An adult Gray whale eats an
average of a tonne of food per day.
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Q- In the wild, what is the main predator of the Gray whale?
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A- The main predator of the Gray whale is the
transient orca, which is known to eat Gray whale calves
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