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The Blue Whale- Endangered Species

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

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Grades 6–9ElaReadingScienceEnglish · SpanishInteractive · Printable
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The Blue Whale- Endangered Species preview and details

About this printable The Blue Whale- Endangered Species science reading passage, NGSS-aligned (Grades 6-9)

The blue whale is the largest animal on Earth, feeding on krill and found in oceans worldwide. Listed as endangered due to commercial whaling, it now faces threats like ship strikes and climate change. Conservation efforts include tracking populations and creating protected marine areas to help this gentle giant recover.
Written by Neha Goel TripathiPublished by Workybooks
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Sample passage and quiz from The Blue Whale- Endangered Species

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The Blue Whale- Endangered Species

The blue whale is the largest animal ever known to have existed, reaching lengths of up to 100 feet and weighing as much as 200 tons. Despite its enormous size, this gentle giant feeds almost exclusively on tiny shrimp-like creatures called krill.

 

Blue whales are found in oceans worldwide, from the Arctic to the Antarctic. They migrate long distances to feed and breed, often traveling thousands of miles each year.

 

blue whale, endangered species, Marine Mammal Protection Act, krill, commercial whaling, conservation, ocean ecosystems

Unfortunately, blue whales are listed as an endangered species under the U.S. Marine Mammal Protection Act. They were nearly driven to extinction in the 20th century due to commercial whaling, which killed over 360,000 blue whales. Although whaling is now banned, blue whales still face threats from ship strikes, ocean noise pollution, and climate change, which affects their food supply.

 

Conservation efforts include tracking blue whale populations, creating protected marine areas, and reducing ship speeds in whale habitats. These measures have helped some populations recover, but the species remains at risk.

 

Fun fact: A blue whale’s heart is the size of a small car, and its tongue can weigh as much as an elephant!

Comprehension quiz (8 questions)

1. What is the blue whale’s diet?

Fish
Krill
Seaweed
Plankton

2. How long can a blue whale grow?

50 feet
75 feet
100 feet
150 feet

3. Why are blue whales endangered?

Overfishing
Commercial whaling
Too much food
Lack of space

4. What is one threat to blue whales today?

Ship strikes
Overpopulation
Lack of krill
Too much sunlight

5. What is one conservation effort for blue whales?

Increasing ship speeds
Creating protected marine areas
Encouraging whaling
Reducing krill populations

6. What is the fun fact mentioned in the passage?

Blue whales can fly
A blue whale’s heart is the size of a small car
Blue whales eat sharks
Blue whales live in freshwater

7. Where are blue whales found?

Only in the Arctic
Only in the Antarctic
In oceans worldwide
Only in the Pacific Ocean

8. Why is protecting blue whales important?

They are a key part of marine ecosystems
They are used for medical research
They are a major food source
They clean the ocean
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