Marine Science Notes Outline
1.
How long have fishes existed on Earth?
2.
Approximately how many different fish species are there presently?
3.
What is a chordate?
4.
What is a notochord?
5.
What is a protochordate?
6.
What is a vertebrate?
7.
Why are protochordates interesting to scientists?
8.
What are moveable mouthparts called?
Jawless Fishes:
9.
Why are jawless fishes considered primitive?
10.
List the 2 types of jawless fishes that exist today: a. b.
11.
These fish live as _______________________. aurumscience.com/environmental/4a_aquatic/lecture.html
Fishes
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Marine Science Notes Outline
12.
Where on Earth is the lamprey found?
13.
Describe how the lamprey feeds.
Cartilaginous Fish
14.
List 3 examples of fish that are cartilaginous: a. b. c.
Fishes
15.
Describe a cartilaginous fish.
16.
Approx. how many species of cartilaginous fish exist?
17.
How many species of bony fish exist?
18.
What are placoid scales?
19.
Describe the difference between the gills on a cartilaginous fish vs. a boney fish.
20.
Stingrays have very pronounced fins that they move up and down when swimming. As they do this, they resemble birds in flight. What are these fins called?
21.
Where on Earth are stingrays found?
22.
Approx. how many species of sharks exist?
23.
What is the smallest shark, and what is its size?
24.
What is the largest shark, and what is its size? aurumscience.com/environmental/4a_aquatic/lecture.html 2

Marine Science Notes Outline
25.
How does the whale shark feed?
26.
How do nurse sharks and leopard sharks feed?
27.
External anatomy of a shark:
Fishes aurumscience.com/environmental/4a_aquatic/lecture.html 3

Marine Science Notes Outline
28.
Internal anatomy of a shark:
Fishes
29.
What is the size of the largest great white shark ever caught?
30.
List 4 sharks that have ACCIDENTALLY harmed and/or killed humans: c. a. b. d. aurumscience.com/environmental/4a_aquatic/lecture.html 4

Marine Science Notes Outline
31.
How long have sharks existed on this planet?
32.
Why are sharks called an “evolutionary dead end”?
33.
What is the lateral line organ?
34.
Describe how sensitive and acute a shark’s sense of smell is.
35.
What are ampullae of Lorenzini?
36.
Describe a shark’s teeth.
Boney Fishes:
37.
What percentage of fish belong to this class?
38.
What separates these fish from cartilaginous fish?
39.
Where are boney fishes found?
40.
Why do fish feel slimy?
41.
What is an operculum?
42.
Describe how a fish breathes. aurumscience.com/environmental/4a_aquatic/lecture.html
Fishes
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Marine Science Notes Outline
43.
What are fins mainly used for?
44.
What are nekton?
45.
What is a swim bladder used for?
46.
Write 3 of the 6 fish facts that you find most interesting. a. b. c.
Fishes aurumscience.com/environmental/4a_aquatic/lecture.html 6