Science & Technology
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5 Aug 2026
Photo credit: Getty
Scientists Discover Ancient Giant Sea Monster from the Age of Dinosaurs
Warm-up → Read & Listen → Check Understanding → Language → Use It
WARM UP
Section: Warm Up
Think Ahead: Which detail do you think appears in this story?
a) Fossil bones of a sea creature
b) A spaceship landing on Mars
c) A new library opening in town
Ask:
(1) Have you ever seen a fossil in a museum?
(2) Do you like learning about ancient ocean creatures?
VOCABULARY
1. ocean / ˈəʊʃn /
(noun)
2. fossil / ˈfɒsl /
(noun)
3. monster / ˈmɒnstə /
(noun)
4. giant / ˈdʒaɪənt /
(adjective)
5. sharp / ʃɑːp /
(adjective)
6. scientist / ˈsaɪəntɪst /
(noun)
A very large area of sea water.
Example: Whales live in the deep ocean.
The remains of an ancient plant or animal in rock.
Example: They found a fossil in the rock.
A very large and frightening animal.
Example: The movie had a huge sea monster.
Extremely large in size.
Example: We saw a giant tree in the park.
Having a thin edge that can cut easily.
Example: The shark has sharp teeth.
A person who studies science.
Example: The scientist studied the old bones.
Long ago, giant creatures lived in the deep ocean. Scientists recently found the fossil of a huge sea monster from the age of dinosaurs. This giant creature was as long as a big bus. It had very sharp teeth to hunt big fish. Scientists studied the hard bones inside old rocks along the coastline. They used special tools to clean the rocks very carefully. Now, we can learn about how this sea creature lived millions of years ago. This exciting discovery helps us understand ancient ocean life much better. It shows that ancient seas were full of amazing and strong animals. Children can see models of this creature in museum displays today. Many people visit the museum to look at the big bones. Scientists hope to find more fossils in the future to learn more secrets about our world. Visiting a museum is a great way to discover new facts about history. You can ask questions and see real fossil shapes. Young students enjoy seeing how big these ancient beasts were long ago.
Unlike sharks and reptiles, this giant was soft-bodied, yet it still landed at the top of the food chain - Photo credit: Hokkaido University
DISCUSSION QUESTIONS
1. Do you like reading about sea animals?
2. Would you like to find an ancient fossil?
3. What is your favourite animal from the past?
4. How big do you think a sea monster can be?
5. Why are museum displays interesting to visit?
FILL IN THE GAPS
FILL THE GAPS
Section 1: Fill in the Gaps
Word Bank: fossil, giant, ocean, sharp
Long ago, giant creatures lived in the deep _______(1). Scientists recently found the _______(2) of a huge sea monster from the age of dinosaurs. This _______(3) creature was as long as a big bus. It had very _______(4) teeth to hunt big fish. Scientists studied the hard bones inside old rocks along the coastline. They used special tools to clean the rocks very carefully. Now, we can learn about how this sea creature lived millions of years ago.
Section 2: Main Idea
What is the main idea of this story?
a) Scientists found a large old fossil of an ancient sea creature.
b) Children are visiting a new museum in the city today.
c) Fish are swimming fast in the ocean near the beach.
UNDERSTANDING
Section 3: True or False
1. The ancient sea creature lived at the same time as dinosaurs. T/F
2. The sea creature was smaller than a small car. T/F
3. Scientists used special tools to clean the rocks carefully. T/F
Section 4: Put Events in Order
Order the events from 1 to 3:
A) Scientists cleaned the old rocks with special tools.
B) A giant creature lived in the ocean long ago.
C) The fossil was found inside old rocks along the coastline.
LANGUAGE
Section 5: Vocab Match
1. Ocean
2. Fossil
3. Monster
4. Giant
5. Sharp
a) Extremely large in size
b) A very large area of sea water
c) Having an edge that can cut easily
d) The remains of an old plant or animal in rock
e) A very large and scary creature
USE IT
Section 6: Discussion Builder
Choose the correct word to complete the sentence:
1. The ancient creature was very big and _______ in the water.
a) giant
b) sweet
c) noisy
2. Scientists study the old _______ to learn about past life.
a) fossil
b) pencil
c) shoe
Section 7: Sentence Unscramble
Put the sentence parts in the correct order:
1. A) A giant creature B) lived in C) the deep ocean D) during the age E) of dinosaurs.
2. A) Scientists B) found C) an ancient fossil D) inside E) hard rocks.
ANSWER KEY
Warm Up
Answer: a) Fossil bones of a giant sea creature
Section 1:
ocean
fossil
giant
sharp
Section 2:
Answer: a
Section 3:
True
False
True
Section 4:
3, 1, 2
1. A giant creature lived in the ocean long ago.
2. The fossil was found inside old rocks along the coastline.
3. Scientists cleaned the old rocks with special tools.
Section 5: 1-b, 2-d, 3-e, 4-a, 5-c
Section 6:
a
a
Section 7:
A - B - C - D - E
A - B - C - D - E
Section 8: Open-ended discussion answers.
Thank you for your feedback!