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

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

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