Oceanography: An Invitation To Mar...

9th Edition
Garrison + 1 other
Publisher: Brooks Cole
ISBN: 9781305254282

Oceanography: An Invitation To Mar...

9th Edition
Garrison + 1 other
Publisher: Brooks Cole
ISBN: 9781305254282


Chapter 15.11, Problem 15.38TBF
Textbook Problem

Why do you think manatees evolved to be so much slower than other marine mammals?

Expert Solution
To determine

The reason why it is thought that manatees evolved to be so much slower relative to other marine mammals.

Explanation of Solution

The large, lazy, small-brained dugongs and manatees, together known as sirenians are the only herbivorous marine mammals. Similar to the cetaceans, these also seem to have advanced from the same descendants as modern ungulates. For their sustenance, they graze on marine algae, sea grasses, and estuarine florae found in coastal temperate and tropical waters of the Americas, Africa, Asia, and Australia. Certain species can live in freshwater as well...

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Chapter 15 Solutions

Oceanography: An Invitation To Marine Science, Loose-leaf Versin
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Ch. 15.3 - What evolutionary advances characteristic of...Ch. 15.4 - What are the most valuable shells? What is your...Ch. 15.4 - How does an arthropod growth curve compare with...Ch. 15.4 - Why do you think brittle stars are found in high...Ch. 15.4 - Which group of animals is Earths most successful...Ch. 15.4 - Clams and squid are in the same phylum. How can...Ch. 15.4 - Provide an example of each of the major groups of...Ch. 15.4 - It has been said that arthropods grow without...Ch. 15.4 - What structural system is unique to the phylum...Ch. 15.5 - Whats a notochord?Ch. 15.5 - Do all chordates have backbones?Ch. 15.6 - How are the vertebrates related?Ch. 15.6 - What are the evolutionary advantages of possessing...Ch. 15.6 - Why is this referred to as just one proposed...Ch. 15.7 - What are the classes of living fishes? Which class...Ch. 15.7 - Which class has the largest individuals? Which is...Ch. 15.7 - Are fishes warm-blooded (endothermic) or...Ch. 15.7 - Are most sharks dangerous to human swimmers?Ch. 15.8 - Why does having water and blood flow in opposite...Ch. 15.8 - Why do you suppose a male attaches permanently to...Ch. 15.8 - How do fishes move effectively through such a...Ch. 15.8 - How do fishes breathe?Ch. 15.8 - How does schooling behavior benefit fishes?Ch. 15.9 - Why do you think ridley turtles nest in such large...Ch. 15.9 - How are sea turtles able to find their way back to...Ch. 15.9 - What is an arriabada?Ch. 15.10 - From what group are birds thought to have evolved?Ch. 15.10 - How are seabirds different from land birds?Ch. 15.10 - Which marine birds are the worlds most efficient...Ch. 15.10 - How do penguins differ from other marine birds?Ch. 15.11 - Why do you think baleen whales are generally...Ch. 15.11 - What characteristics are unique to marine mammals?Ch. 15.11 - What are the largest animals ever to have lived on...Ch. 15.11 - What is echolocation? How do whales use it?Ch. 15.11 - How is a seal different from a sea lion? Which...Ch. 15.11 - Why do you think manatees evolved to be so much...Ch. 15 - When did the first true animals evolve? What...Ch. 15 - How can an arthropod grow within a tailored shell?...Ch. 15 - Are all chordates vertebrates? Are all vertebrates...Ch. 15 - Of the living classes of vertebrates, only one has...Ch. 15 - How are odontocete (toothed) whales different from...Ch. 15 - Do you think there are more species of animals on...Ch. 15 - There are more parasitic species of animals than...

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