Ocean Mammals

Name:

Date:

Instructions: Explore the fascinating world of whales, dolphins, seals, and other mammals that live in the sea.

1.
The blue whale is the largest animal ever to have lived. How long can it grow?
A
120 feet
B
80 feet
C
100 feet
D
60 feet
2.
Which marine mammal is known for using tools, like rocks, to open shellfish?
A
Dolphin
B
Sea Otter
C
Seal
D
Walrus
3.
Dolphins navigate and find prey using what biological sonar system?
A
Echolocation
B
Electroreception
C
Infrared sensing
D
Magnetoreception
4.
Which whale is known for its complex songs that can last for hours?
A
Orca
B
Sperm Whale
C
Humpback Whale
D
Blue Whale
5.
The orca, or killer whale, is actually the largest member of what family?
A
Seal family
B
Dolphin family
C
Whale family
D
Porpoise family
6.
How deep can a sperm whale dive to hunt giant squid?
A
500 feet
B
1,000 feet
C
Over 7,000 feet
D
3,000 feet
7.
Manatees are sometimes called what, due to old sailors mistaking them for mythical beings?
A
Sea horses
B
Sea cows
C
Mermaids
D
Sea monsters
8.
Which seal species is the largest, with males weighing up to 8,800 pounds?
A
Weddell Seal
B
Harbor Seal
C
Southern Elephant Seal
D
Leopard Seal
9.
What do baleen whales use instead of teeth to filter food from water?
A
Suction cups
B
Gill rakers
C
A tongue net
D
Baleen plates made of keratin
10.
Which marine mammal can hold its breath for up to two hours during deep dives?
A
Sea Otter
B
Sperm Whale
C
Bottlenose Dolphin
D
Elephant Seal
11.
The dugong, a relative of the manatee, is found primarily in what ocean?
A
Arctic Ocean
B
Pacific Ocean
C
Atlantic Ocean
D
Indian Ocean
12.
How do sea otters keep from drifting apart while sleeping in the ocean?
A
They anchor to kelp
B
They hold hands (paws)
C
They sleep on shore
D
They form a circle
13.
The narwhal's tusk spirals in which direction?
A
It doesn't spiral
B
Counterclockwise (left-handed spiral)
C
Clockwise
D
It varies
14.
Which dolphin species is the most commonly seen in aquariums and marine parks?
A
Common Dolphin
B
Bottlenose Dolphin
C
Risso's Dolphin
D
Spinner Dolphin
15.
Gray whales make one of the longest migrations of any mammal, traveling between where?
A
Hawaii and Alaska
B
Norway and Greenland
C
Argentina and Antarctica
D
Mexico and Alaska

Answer Key

Question 1

C. 100 feet

Question 2

B. Sea Otter

Question 3

A. Echolocation

Question 4

C. Humpback Whale

Question 5

B. Dolphin family

Question 6

C. Over 7,000 feet

Question 7

C. Mermaids

Question 8

C. Southern Elephant Seal

Question 9

D. Baleen plates made of keratin

Question 10

D. Elephant Seal

Question 11

D. Indian Ocean

Question 12

B. They hold hands (paws)

Question 13

B. Counterclockwise (left-handed spiral)

Question 14

B. Bottlenose Dolphin

Question 15

D. Mexico and Alaska

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