Have you ever wondered what lies beneath the blue waves of the ocean? 🌊 The ocean is a mysterious world full of wonderful creatures, colorful corals, and hidden treasures. It covers more than two-thirds of our planet and is home to millions of sea animals — from the giant whale to the tiny jellyfish.
In this post, let’s explore interesting facts about life below the ocean and try some fun worksheets with answers made specially for Class 3 ICSE students.
Fascinating Facts About the Ocean
- The Pacific Ocean is the largest and deepest ocean on Earth.
- The Arctic Ocean is the smallest and coldest.
- Whales are the largest animals that live in the ocean.
- Coral reefs are made of tiny living creatures called polyps.
- Jellyfish have soft bodies and stinging tentacles.
- Tides are caused by the gravitational pull of the Moon.
- The Mariana Trench is the deepest part of the ocean.
Below the Ocean Worksheets with Answers
Worksheet 1: Fill in the Blanks
Questions:
- The largest ocean on Earth is the __________ Ocean.
- The study of oceans is called __________.
- A group of fish swimming together is called a __________.
- The __________ is the smallest ocean.
- Whales and dolphins breathe through a __________.
- The movement of seawater up and down is called __________.
- __________ are tiny animals that make coral reefs.
- The deepest part of the ocean is called a __________.
- __________ are underwater mountains.
- A baby fish is called a __________.
Answers:
- Pacific Ocean
- Oceanography
- School
- Arctic Ocean
- Blowhole
- Tide
- Corals
- Trench
- Seamounts
- Fry
Worksheet 2: Multiple Choice Questions (MCQs)
1. What covers most of Earth’s surface?a) Forests b) Deserts ✅ c) Oceans d) Mountains
2. Which animal has eight arms?
a) Crab b) Starfish ✅ c) Octopus d) Turtle
3. What helps fish to breathe underwater?
a) Lungs ✅ b) Gills c) Blowhole d) Nose
4. What do we call plants that grow under the sea?
a) Grass ✅ b) Seaweed c) Flowers d) Algae
5. Which creature produces pearls?
a) Shark ✅ b) Oyster c) Whale d) Lobster
Worksheet 3: Match the Following
| Column A | Column B |
|---|---|
| 1. Whale | b. Largest sea animal |
| 2. Jellyfish | a. Stinging tentacles |
| 3. Coral | d. Made of tiny animals |
| 4. Fish | c. Breathes through gills |
| 5. Seaweed | e. Underwater plant |
Answers: 1–b, 2–a, 3–d, 4–c, 5–e
Worksheet 4: True or False
| Statement | Answer |
|---|---|
| 1. Oceans are smaller than seas. | False |
| 2. The Mariana Trench is the deepest ocean trench. | True |
| 3. Whales use gills to breathe underwater. | False |
| 4. The ocean floor is flat and smooth. | False |
| 5. Coral reefs are made by tiny living creatures. | True |
Worksheet 5: Answer the Following Questions
1. What is the difference between a sea and an ocean?➤ A sea is smaller and partly enclosed by land, while an ocean is larger and deeper.
2. Name any three creatures that live in the ocean.
➤ Whale, Shark, Jellyfish.
3. Why is it important to keep the oceans clean?
➤ Because many living things depend on clean water for survival, and pollution harms marine life.
4. What do you understand by the term “tides”?
➤ Tides are the rise and fall of ocean water caused by the Moon’s pull.
5. What is the ocean floor made of?
➤ The ocean floor is made of sand, rocks, and soil.
Activity for Kids
Draw an underwater scene showing at least five ocean creatures such as fish, turtle, jellyfish, coral, and seaweed.
Label each creature neatly!
Conclusion
The ocean is full of wonders and life. From the tiniest plankton to the mighty blue whale, every creature plays an important role in the ocean world.
Let’s learn more about our oceans and promise to keep them clean and safe for all living beings!
