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The Narwhal: Arctic’s Unicorn of the Sea

Interactive passage with audio narration, comprehension questions, and printable PDF.

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Grades 5–8ElaReadingScienceEnglish · SpanishInteractive · Printable
Aligned toMS-LS2-1RI.6.3RI.7.3RI.8.8

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Comprehension quiz
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The Narwhal: Arctic’s Unicorn of the Sea preview and details

About this printable The Narwhal: Arctic’s Unicorn of the Sea science reading passage, NGSS-aligned (Grades 5-8)

This NGSS-aligned passage (MS-LS2-1) explores how narwhals survive in Arctic ecosystems. Students learn about specialized feeding on halibut/cod, deep diving to 1,500m for prey, and the tusk's sensory functions. Covers resource availability effects in extreme environments, connecting to key middle school life science standards about organism-environment relationships.
Written by Workybooks TeamPublished by Workybooks
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Sample passage and quiz from The Narwhal: Arctic’s Unicorn of the Sea

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The Narwhal: Arctic’s Unicorn of the Sea

Monodon monoceros pod

"Monodon monoceros pod" by Dr. Kristin Laidre, Polar Science Center, UW NOAA/OAR/OER / Wikimedia Commons.

Deep in the icy waters of the Arctic swims one of nature's most extraordinary creatures—the narwhal(Monodon monoceros). Known as the "unicorns of the sea" for their spectacular spiral tusks, these elusive whales are perfectly adapted to life in one of Earth's harshest environments.

 

Narwhals live exclusively in Arctic waters, primarily around:

●       Northern Canada

●       Greenland

●       Russia

●       Norway

 

They spend their entire lives in frigid temperatures, often swimming among sea ice where few predators can follow. During winter, they migrate to deeper offshore waters to avoid being trapped by ice.

 

Narwhals are skilled hunters that feast on:

●       Arctic cod and halibut

●       Shrimp and squid

●       Other deep-sea fish

 

Their unique feeding strategy involves suction feeding—they create a vacuum with their mouths to draw in prey. Surprisingly, they're among the deepest-diving marine mammals, reaching depths of 1,500 meters (4,900 feet) in search of food!

 

The narwhal's most famous feature is actually a modified tooth that can grow up to 3 meters (10 feet)long. Scientists believe males use these tusks for:

●       Sensing changes in their environment

●       Establishing dominance

●       Possibly even hunting

 

Fun Fact: Narwhal tusks were once sold as "unicorn horns" in medieval Europe for many times their weight in gold!

Comprehension quiz (8 questions)

1. Where do narwhals live?

Tropical oceans
Arctic waters
Mediterranean Sea
Antarctic region

2. What is a narwhal's tusk actually made of?

Bone
Modified tooth
Cartilage
Keratin

3. What do narwhals primarily eat?

Seaweed
Arctic cod and halibut
Penguins
Plankton

4. How do narwhals catch their food?

Filter feeding
Suction feeding
Using their tusks
Chasing prey onto ice

5. How deep can narwhals dive?

100 meters
500 meters
1,500 meters
They don't dive

6. Why do narwhals migrate in winter?

To find warmer water
To avoid being trapped by ice
To follow their prey south
To give birth

7. What was historically believed about narwhal tusks?

They were dinosaur teeth
They were unicorn horns
They were mermaid weapons
They were whale bones

8. Which of these is NOT a function of the narwhal's tusk?

Sensing environment
Establishing dominance
Filtering plankton
Possibly hunting
Who it's for

Perfect for the way you teach

Teachers
  • Build comprehension skills
  • Auto-graded quiz
  • Differentiated reading
Parents
  • Read together at home
  • Improve fluency
  • Quiet reading time
Homeschoolers
  • Reading curriculum support
  • Independent practice
  • Track Lexile growth
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