Answer:
The purpose of the author is to try to convince the readers and make spread awareness about the practice that are destroying coral reefs which needs to be stopped.
Explanation:
The given article speaks about the coral reefs. Coral reefs are made of skeletons of colonial marine invertebrates and found underwater They are large in structure.
They play a vital role in the ecosystem as they work as a protector of coastlines from waves. And provide shelter to the habitats.
As described in the passage with many other uses of coral reefs such as medicinal benefits, etc it is important to keep these reefs safe. After mentioning the benefits of coral reefs, the writer takes a transition from benefits to the ways in which these protectors are harmed. These reefs, though look strong, are very delicate as stated in the passage. They can be easily damaged.
The primary purpose of the author's writing of this passage is to convince the readers that the practices that are destroying these reefs should be stopped.
The author has achieved this purpose by first stating the benefits of coral reefs and how important it is to preserve them. Then describes the various practices of men that are destroying these reefs. Thus the author tries to persuade the readers in this manner.