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Most dolphins have acute eyesight, _________ .

In the water
Out of the water
Both in and out of the water
Only in the clean water


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Dolphin ________ is(are) believed to function as antennae to receive incoming sound and to pinpoint the exact location of an object.

Nose
Teeth
Ear
Head


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The United States and _______ militaries have trained and employed oceanic dolphins for several reasons.

Japanese
Australian
Canadian
Russian


The United States and Russian militaries have trained and employed oceanic dolphins for several reasons. Such military dolphins have been trained to rescue lost naval swimmers or to locate underwater mines.

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Dolphins have a ________ of fat beneath their skin. This layer of fat is called blubber.

Thick layer
Very thick layer
Thin layer
Very thin layer


Dolphins have a thick layer of fat beneath their skin. This layer of fat is called blubber. As dolphins have no fur, they need the blubber to keep warm. Dolphins in colder waters usually have a thicker layer of fat than dolphins in warm waters.

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How many deep dolphins can swim below the surface of the ocean?

20 meters
140 meters
260 meters
390 meters


Dolphins can swim up to 260 m. below the surface of the ocean.

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Can dolphin breath under the water?

Yes
No
Yes, dolphin can breath under the water and above the water both.
Yes, but dolphin can breath in deep water only.


Dolphins can stay up to 15 minutes under water, but they cannot breath under the water.

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Dolphins live in groups formed by ________ individuals.

3 to 4
10 to 12
50 to 60
110 to 150


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How many types of ocean dolphins exists ?

36
46
56
66


There are 36 different kinds of ocean dolphins and 5 species of river dolphins.

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What is the Family of Dolphin ?

Animalia
Mammalia
Cetacea
Delphinidae


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A group of dolphins is called a "school" or a "_____"

Pod
Mod
Hod
Lod


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