I WONDER - How Do Fish Float?

Fish have a swim bladder that helps them float by holding air, allowing them to stay afloat without swimming. Sharks lack this organ, so they must swim constantly to avoid sinking, even while sleeping.

What is the function of the swim bladder in fish?

• To protect them from predators

• To help them float

• To assist in digestion

• To help them breathe underwater

Which of the following is true about the swim bladder?

• It is found in both fish and sharks

• It helps fish to sink

• It is used for communication

• It is an organ that holds air

Why do sharks need to swim constantly?

• To communicate with other sharks

• To regulate body temperature

• To avoid sinking

• To catch prey

What happens to sharks if they stop swimming?

• They become more aggressive

• They sink

• They start to sleep

• They float to the surface

How do sharks manage to stay afloat while sleeping?

• They rest on the ocean floor

• They rely on ocean currents

• They use their fins to stay balanced

• They continue to swim