Shark Senses and Seal Behavior

The video explores the great white shark's exceptional sense of smell, which is 10,000 times more sensitive than a human's. It details how sharks use their nostrils, not connected to their mouths, to detect prey through scent trails left by seals. Seal Island, home to a large seal population, provides a natural environment for sharks to hunt. Seals, adapted for aquatic life, leave scent trails that sharks follow using a zigzag motion to determine the strongest scent direction. The shark's olfactory sac plays a crucial role in scent detection, allowing it to identify prey even in vast bodies of water.

What is the primary function of a great white shark's nostrils?

• To help with breathing

• To detect prey through smell

• To filter water

• To aid in swimming

What is a significant challenge faced by female seals on Seal Island?

• Escaping from the island

• Finding food

• Avoiding predators

• Making space for their newborns

What is the main component of the seals' diet?

• Crustaceans

• Fish

• Seaweed

• Plankton

How do seals leave a scent trail in the water?

• Through their breath

• By swimming in circles

• By shedding skin

• By secreting oils and other substances

What swimming pattern does the great white shark use to follow a scent trail?

• Zigzag motion

• Random movement

• Circular motion

• Straight line

What is the purpose of the zigzag motion in the shark's swimming?

• To confuse prey

• To compare scent strength between nostrils

• To avoid obstacles

• To increase speed

What is the function of the olfactory sac in a great white shark?

• To store food

• To aid in hearing

• To filter water

• To enhance the sense of smell

How much more sensitive is a shark's sense of smell compared to a human's?

• 100 times

• 1,000 times

• 10,000 times

• 100,000 times

What mechanism allows the shark to detect specific smells?

• Magnetic fields

• Sound waves

• Lock and key receptor mechanism

• Visual cues

What is the shark capable of detecting in a large body of water?

• A single drop of blood

• A single seal

• A single drop of fish oil

• A single fish