16 – Marine Mammals: Reflective Questions

Description

Your essay answer should be clear and succinct, amounting to perhaps 3-5 sentences totaling 50 to 80 words; longer essays are strongly discouraged. It is recommended that you prepare your answer in a separate document from which you copy it into Canvas.


Question 1



2

pts

Match the different feeding characteristics to their respective whale type, baleen or toothed.




Question 2



5

pts

Why do some species of whales in the Pacific migrate, what routes do they follow and when do they make their migration journeys?


A strong answer will explain why whales migrate, specifically identifying the timing of their journey and the regions they travel between, and associating the behavior described to particular whale species.






Question 3



3

pts

Match each of the three marine mammals with their predominant food.





Oceans & Global Environment
Module 16: Ocean Habitats
Elephant
seal
•Marine Mammals:
• Lifestyles of pinnipeds – animals with
flippers (seals, sea lions, walruses) &
other groups (manatees & sea otters).
• Diet of pinnipeds – primarily fish, except
for walrus (benthic crustaceans).
• Manatees & dugongs – herbivores
• Sea otters – abalone & sea urchins.
Leopard seal
Key Concepts?
•Understanding Lifestyles
• Varied diets & dominant habitat of
pinnipeds , manatees & sea otters.
Dugongs
G131 Oceans & Global Environment
Pinnipeds (Animals with Flippers)
Seals, Sea Lions, Walruses
California sea lions
•Seals: no external ears.
•Walruses: tusks for shellfish.
•Feed on fish, cephalopods,
mollusks, crustaceans,penguins,
using whiskers (vibrissae).
•Inhabit high latitudes & colder
waters (+ Hawai’i and Galapagos)
Walruses
Seals on the beach
Other Marine Mammals
Sea Cows & Sea Otters
•Manatees & Dugongs.
• Herbivores in warm waters of Caribbean,
Asia, Australia, Africa.
•Sea Otters (Alaska to California).
Manatee
• Feed on abalone, clams, urchins, etc.
Sea otters
with abalone
Sea otter in kelp
Manatee injured
by boat propellor
Dugong & calf
Oceans & Global Environment
Module 16: Ocean Habitats
Orca with crab
•Cetaceans – Whales:
• All warm-blooded, air-breathing mammals.
• Two types: baleen & toothed whales.
• Baleen whales filter feed on plankton,
toothed whales on fish, squid.
• All great whales, except sperm whale, are
baleen whales (blue, humpback, gray, right,
bowhead, fin, sei, minke).
• Humpback, gray whales migrate annually.
Sperm whale
with giant squid
Baleen whale
feeding on krill
Key Concepts
•Lifestyles linked to feeding:
• Found in all ocean waters.
G131 Oceans & Global Environment
Cetaceans: Body Sizes
Whales, Dolphins, Porpoises
•Warm-blooded, air-breathing mammals.
Toothed sperm whale
Blue
Pilot
Bottlenose
dolphin
Humpback
Baleen
Minke
Gray
Bowhead
Sperm
Baleen
or
Teeth
Orca
Beluga
Cetaceans
Dolphins
Whales, Dolphins, Porpoises
•Warm-blooded, air-breathing
mammals.
•Baleen & toothed whales:
• Baleen: filter feeders on zooplankton.
• Toothed: feed on fish, squid, crustacea,
seals using sound clicks to echo locate prey.
Echoes
Orca
Echolocation
Short highfrequency clicks
Gray whale

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