A simple explanation of why animals like penguins and seals have flippers rather than legs, geared towards a 6-year-old's understanding.
Flippers are special body parts that some animals have instead of legs. They help these animals swim better in the water. Think of flippers like a big, flat hand that can help push through the water easily!
When you swim, you use your arms and legs to move. Animals with flippers, like seals and penguins, can glide through the water much faster than if they had legs. This is because:
Some animals that have flippers are:
So, having flippers instead of legs is a super cool way for animals to swim. Just like your arms help you swim, flippers help these animals swim faster and easier. Isn’t nature amazing?