Humans on Earth – Did you know?

Coral reefs are vital for marine biodiversity but face threats from pollution. Artificial reefs, which are man-made structures, can help damaged coral regrow by providing a surface for coral attachment. Over time, these structures become colonized, offering new habitats for marine life.

What fraction of marine species rely on reefs for their habitat?

• 1/2

• 1/4

• 1/3

• 1/5

What is a major threat to natural reefs?

• Overfishing

• Pollution

• Climate change

• Tourism

What are artificial reefs primarily made of?

• Natural coral

• Man-made structures

• Sand

• Seaweed

How do artificial reefs help damaged coral?

• By offering a surface for coral to attach

• By reducing water salinity

• By increasing water temperature

• By providing shade

What is the ultimate benefit of coral colonizing artificial reefs?

• Cleaner water

• More fishing opportunities

• New homes for marine life

• Increased tourism