The respiratory system – Clip

The video discusses the oxygen requirements for marine animals hunting at great depths, specifically focusing on whales. It highlights how whales can hold their breath for extended periods, up to two hours, to catch their prey at 1000 meters below sea level.

Why is oxygen crucial for whales during their hunting activities?

• To sustain them while holding their breath

• To help them swim faster

• To maintain their body temperature

• To communicate with other whales

At what depth do whales typically hunt for food?

• 2000 meters below sea level

• 1500 meters below sea level

• 1000 meters below sea level

• 500 meters below sea level

What is the primary reason whales need a lot of oxygen when diving deep?

• To stay submerged for long periods

• To find their way back to the surface

• To avoid predators

• To digest their food

How long can whales hold their breath while hunting?

• Up to 2 hours

• Up to 1 hour

• Up to 30 minutes

• Up to 3 hours

What is the main challenge whales face when holding their breath for extended periods?

• Finding enough food

• Avoiding other marine animals

• Maintaining oxygen levels

• Navigating underwater currents