Ocean 115 - Introduction to Oceanography » Spring 2022 » Open Ocean

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Question #1
When do striped marlins mainly hunt?
A.   In daylight
B.   Anytime
C.   At dusk
D.   At night
Question #2
What happens to the sardines the marlins were hunting?
A.   They escape
B.   They are swallowed by a whale
C.   They scare them off using the ball defense
D.   The marlins eat them all
Question #3
What do the manta rays feed on?
A.   Fish
B.   Shrimp
C.   Eggs
D.   Sharks
Question #4
How many tuna eggs reach adulthood?
A.   1 in 1000
B.   1 in 100 million
C.   1 in 10
D.   1 in 1 million
E.   1 in 100,000
Question #5
What is the use of the sail on the sailfish?
A.   To ward off predators
B.   To find a mate
C.   To increase its speed
D.   To light up blue and ultraviolet when hunting
Question #6
How can fish find shelter in the open ocean?
A.   By mimicking larger fish and staying in one large group
B.   They actually can’t
C.   By swimming under large ships
D.   By finding floating debris
Question #7
What is a seamount?
A.   A shimmer in the ocean
B.   A crater from an underwater volcano
C.   A type of coral
D.   A depression off the coast
E.   A submerged island
Question #8
Why are seamounts important for marine biologists?
A.   They allow better navigation
B.   They bring up nutrients from the deep sea by deflecting the deep water currents up to the surface
C.   They have magnetic signals that pull in sharks
D.   They are the only place we can find jacks
Question #9
Why do the hammerhead sharks come to the volcanic islands?
A.   To eat silky sharks
B.   To hunt for squid
C.   To find cleaners to remove parasites
D.   To eat reef fish
Question #10
What is the ball defense?
A.   A trick that jacks use to confuse sharks
B.   A tight circle used by small fish to try to avoid being eaten
C.   A tight circle and quick breakup in all directions to confuse predators
D.   A rolling attack strategy
Question #11
How can the tuna break through the ball?
A.   By eating a path
B.   By swallowing large numbers making the ball break
C.   They can’t, the ball scares off predators by its size
D.   By using speed to splinter the smaller fish into smaller groups
Question #12
What do the tuna follow?
A.   Jacks
B.   Mako sharks
C.   Tiger sharks
D.   Dolphins
E.   Sturgeon
Question #13
Who drive the dolphin away from the bate ball?
A.   Bluefin tuna
B.   Great White sharks
C.   Humpback whales
D.   Cory's Shearwater

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