Basking Sharks: Ecology, History, and Conservation

The video discusses the fascinating characteristics of basking sharks, their historical significance to coastal communities, and the threats they face due to fishing practices. It highlights conservation efforts and the importance of research, including tagging and genetic studies, to understand their behavior and population dynamics. Innovative sampling techniques are explored, emphasizing the need for continued research to protect these magnificent creatures.

What is the primary diet of basking sharks?

• Seaweed

• Zooplankton

• Small fish

• Crustaceans

What was one of the main uses of basking shark oil in the past?

• Lubrication

• Perfume

• Lighting

• Cooking

What is a significant threat to shark populations worldwide?

• Overfishing

• Pollution

• Finning

• Climate change

Why are basking sharks considered good indicators of climate change?

• They feed on plankton

• They migrate long distances

• They are sensitive to temperature changes

• They have a long lifespan

What method is used to track the movements of basking sharks?

• Satellite tags

• Underwater cameras

• Acoustic sensors

• Radio collars

What surprising discovery was made about the genetic diversity of basking sharks?

• They have high genetic diversity

• They have low genetic diversity

• They are genetically similar to whale sharks

• They have unique genetic markers

What innovative method was used to collect genetic samples from basking sharks?

• Collecting slime with a mop

• Using a biopsy dart

• Using a crossbow

• Collecting scales

Why is it important to determine the gender of basking sharks in genetic studies?

• To understand their feeding habits

• To track their migration patterns

• To help in conservation efforts

• To differentiate between species

What is the estimated effective population size of basking sharks worldwide?

• 20,000

• 50,000

• 5,000

• 10,000

What is the main challenge in studying the genetics of basking sharks?

• Limited genetic samples

• Difficulty in capturing sharks

• Lack of funding

• Complex genetic structure