Ecosystem and Overfishing on Easter Island

The video explores the importance of sharks in marine ecosystems, comparing their presence to lions in the African plains. It highlights the decline in fish populations around Easter Island due to overfishing, with historical insights from a local archaeologist. The video discusses the impact of commercial fishing and the use of trommel nets, emphasizing the need for sustainable practices to allow fish populations to recover.

What does the presence of sharks in the water signify?

• A decline in fish population

• A healthy ecosystem

• Polluted waters

• Overfishing

What is the significance of seeing lions in the African plains?

• It indicates a lack of prey

• It signifies a healthy ecosystem

• It means the area is deserted

• It shows overpopulation

What is the main issue observed in the coral reef?

• Absence of large fish

• Coral bleaching

• Abundance of large fish

• Pollution

Who is Edmundo Edwards?

• A commercial fishing captain

• A marine biologist

• A local fisherman

• An archaeologist and expert on Easter Island

What was the state of tuna fish in the 1960s according to Edmundo?

• Abundant and easy to catch

• Only found near the shore

• Rare and hard to find

• Completely absent

What is the current state of tuna fishing according to the video?

• Tuna is still abundant

• Catching one tuna a day is considered lucky

• Tuna fishing is banned

• Tuna is only found in deep waters

What is a major consequence of overfishing around Easter Island?

• More fishing opportunities

• Improved fish diversity

• Decline in lobster and shark numbers

• Increase in shark population

What fishing method is primarily responsible for the decline in fish population?

• Line fishing

• Recreational fishing

• Spearfishing

• Trommel nets

What happens if a fish population is continuously fished without recovery?

• It stabilizes

• It migrates

• It grows

• It never recovers

What is the impact of commercial boats on Easter Island's fish population?

• They protect the fish

• They help increase fish numbers

• They have no impact

• They contribute to the depletion