Coral Reefs and Their Importance

What percentage of the ocean floor do coral reefs cover, and what fraction of marine life do they support?

• Less than 1% of the ocean floor, supporting a quarter of marine life

• 20% of the ocean floor, supporting all marine life

• 5% of the ocean floor, supporting a third of marine life

• 10% of the ocean floor, supporting half of marine life

How much more likely are we to discover new drugs from coral reef ecosystems compared to land-based ones?

• 200 to 300 times more likely

• 50 to 100 times more likely

• 300 to 400 times more likely

• 100 to 200 times more likely

What percentage of the world's protein comes from seafood, according to the transcript?

• A quarter

• A third

• A fifth

• Half

How much could coastal tourism drop if coral reefs disappear, and what is the estimated economic impact?

• By more than 9%, costing $36 billion

• By more than 12%, costing $40 billion

• By more than 15%, costing $50 billion

• By more than 5%, costing $20 billion

What percentage of wave strength do coral reefs cancel out, providing protection to coastlines?

• 80%

• 85%

• 90%

• 97%