Fur Seal Population and Tagging Study

The video discusses the history and recovery of the northern fur seal population on Southeast Farallon Island. Once a top predator, their numbers drastically declined due to hunting in the 1800s. Since 1970, the population has been recovering, with breeding resuming in 1996. Current surveys show exponential growth, though challenges in accurate counting remain. Tagging efforts reveal migration patterns, with some seals traveling from Russia. The future population size is uncertain due to ecosystem changes.

What was the primary reason for the decline of the northern fur seal population in the 1800s?

• Natural predators

• Pollution

• Climate change

• Hunting for pelts

When did biologists first start noticing the return of fur seals to the island?

• 1970

• 1990

• 1980

• 1960

What is a major challenge in accurately counting the fur seal population?

• Lack of funding

• Inaccessibility of certain areas

• Weather conditions

• Predation by other animals

Approximately how many fur seals are currently at the colony?

• 2,000

• 1,200

• 1,000

• 500

What adaptation helps fur seals stay warm in cold water?

• Fast swimming

• Large size

• Dense fur

• Thick blubber

Where do most of the tagged fur seals in the Farallon Islands originate from?

• Alaska

• San Miguel Island

• Hawaii

• Commander Islands

What is the purpose of tagging fur seals?

• To identify their age

• To track their diet

• To monitor their health

• To study their migration patterns

What is the significance of a fur seal being tagged from the Commander Islands?

• It suggests a change in diet

• It indicates a new breeding ground

• It reveals a new predator

• It shows a long migration distance

What is uncertain about the future of the fur seal population?

• Their ability to adapt to climate change

• Their potential to reach historical population levels

• Their migration patterns

• Their diet preferences

What is a potential future population size mentioned for the fur seals?

• 10,000

• 20,000 to 30,000

• 50,000

• 150,000