Streamlined: Dolphins vs People

The video explains why dolphins swim faster than humans, highlighting their streamlined bodies and thick skin that reduce drag. Water's density affects human swimming, causing resistance. Dolphins' skin sheds frequently, maintaining smoothness. Humans have adopted techniques like swimming caps and special suits to minimize drag, but in a natural race, dolphins would still win.

What is the maximum speed dolphins can reach in water?

• 40 kilometers an hour

• 10 kilometers an hour

• 20 kilometers an hour

• 30 kilometers an hour

Why do dolphins experience less drag compared to humans?

• They have a special swimming technique

• They have larger fins

• Their skin is thicker and more rubber-like

• They swim in groups

How often do dolphins shed their skin to maintain smoothness?

• Every two hours

• Every hour

• Every day

• Every 30 minutes

What is one method professional swimmers use to reduce drag?

• Using heavier swimsuits

• Wearing swimming caps

• Swimming with dolphins

• Swimming in warmer water

What is the purpose of wearing dolphin suits in swimming?

• To improve breathing

• To enhance visibility

• To increase buoyancy

• To reduce water resistance