Coral reefs

What are coral reefs and where are they found?

• Coral reefs are diverse underwater ecosystems and are built by colonies of tiny animals and stony corals.

• Coral reefs can be found in three of the earths oceans that contain part of the tropics.

What are the three main threats to coral reef eco systems?

• Fishermen put cyanide in the coral reefs to poison fish and catch them.

• Sewage promotes the growth of algae which harms coral reefs.

• Boats dropping anchors can severely damage reefs.

What does a coral reef food web look like?

• A coral reef food web looks like this: