Discovering the Fascinating World of Sharks

What material makes up the skeletons of sharks, aiding in their buoyancy?

• Bone

• Cartilage

• Calcium

• Keratin

How do sharks primarily obtain oxygen?

• Through their skin

• Through their fins

• By swallowing air

• By pumping water over their gills

What unique ability do sharks have that helps them detect prey?

• Infrared vision

• Ultrasonic hearing

• Magnetic field sensing

• Electric field detection

What is the maximum size a great white shark can reach?

• 25 feet and 3 tons

• 10 feet and 1 ton

• 15 feet and 1.5 tons

• 20 feet and 2.2 tons

How many teeth can a sandbar shark shed in its lifetime?

• 35,000

• 10,000

• 50,000

• 20,000