ClassX Video Lessons Youtube Channel Smile and Learn English Did You Know That Sharks Don’t Have Bones? ????
Did you know that sharks are different from most other animals because they don’t have regular bones? Instead, their skeletons are made of something called cartilage. Cartilage is the same stuff that makes up our ears and the tip of our nose. It’s bendy and lighter than bone, which helps sharks swim fast and easily in the water.
Sharks have been living in the oceans for a very long time. In fact, scientists have found shark fossils that are over 400 million years old! That means sharks were swimming around even when dinosaurs were on Earth. Isn’t that amazing?
Sharks can be found in oceans all over the world. They like to live in places where they can find food and where the water temperature is just right for them. If their current home doesn’t have enough food or if the water gets too hot or too cold, sharks will move to a new place. This moving around is called migration.
Cartilage is important for sharks because it makes them lighter and more flexible. This helps them move quickly and catch their food. It also helps them save energy while swimming long distances. That’s why sharks are such great hunters in the ocean!
Now you know some cool facts about sharks and why they are so special. Next time you see a picture of a shark, remember that they are amazing creatures with a unique skeleton made of cartilage!
Cartilage Exploration: Let’s explore what cartilage feels like! Ask an adult to help you find some bendy objects around the house, like a rubber band or a sponge. These objects can help you understand how cartilage works. Try bending and twisting them. How do they feel compared to something hard like a bone? Discuss with a friend or family member how these objects are similar to the cartilage in sharks.
Shark Migration Map: Create a simple map of the world using paper and crayons. Mark different oceans where sharks live. Use a blue crayon to draw arrows showing how sharks might migrate from one place to another in search of food or better water temperatures. Think about what might cause a shark to move to a new area. Share your map with your class and explain your migration paths.
Shark Fossil Hunt: Pretend you are a scientist looking for shark fossils! Use clay or playdough to create your own “fossils” by pressing objects like shells or small toys into the dough. Let them dry and then carefully dig them out. Imagine these are shark fossils. How old do you think they might be? Discuss with a partner why finding real shark fossils is important for learning about the past.
Did you know that sharks don’t have normal bones? Their skeletons are made of cartilage, just like our ears. There are shark fossils from as far back as 400 million years ago! Wow, so they lived alongside the dinosaurs. Sharks live all over the world, and when factors such as food or water temperature do not meet their needs, they migrate. That means they change their place of residence.
