Dolphins: Fascinating Marine Mammals

The video explores the fascinating traits of dolphins, highlighting their intelligence, unique sleeping habits, speed, jumping ability, social behavior, and echolocation skills. Dolphins are playful yet smart, capable of sleeping with half their brain awake to stay alert. Their streamlined bodies allow them to swim fast and jump high. They live in large social groups and use echolocation to communicate and hunt.

What characteristic of dolphins makes them appear as if they are always smiling?

• Their jumping ability

• Their curved lips

• Their playful nature

• Their streamlined bodies

How do dolphins manage to sleep while staying alert to predators?

• They sleep in large groups for protection

• They let half of their brain sleep at a time

• They sleep on the ocean floor

• They sleep with both eyes open

Why is it important for dolphins to keep one eye open while sleeping?

• To watch for predators

• To navigate through the water

• To find food

• To communicate with other dolphins

What feature of dolphins allows them to swim at high speeds?

• Their social behavior

• Their large fins

• Their streamlined bodies

• Their strong jaws

How fast can dolphins swim?

• 10 kilometers per hour

• 20 kilometers per hour

• 30 kilometers per hour

• 40 kilometers per hour

What is the maximum height dolphins can jump out of the water?

• 12 meters

• 9 meters

• 6 meters

• 3 meters

What is a group of dolphins called?

• A school

• A herd

• A pod

• A flock

How do dolphins use echolocation?

• By using their eyes to see in the dark

• By emitting clicks and listening for echoes

• By swimming in circles

• By using their tails to create waves

What information can dolphins gather using echolocation?

• The color of objects

• The size, shape, and speed of objects

• The depth of the ocean

• The temperature of the water

What sounds do dolphins use to communicate with each other?

• Barks and howls

• Clicks and whistles

• Chirps and tweets

• Roars and growls