What are the environmental dangers to the Great Barrier Reef?

This week Year 4 received a high-level transmission from the Department of Planetary Health. They called it Operation: Pulse and Respiration. We had 45 minutes to reconstruct the damage report and present a 'State of Emergency' broadcast to the Global Council. If we didn't, the funding for the restoration project was going to be cut.  Ask us what we included in our report and what factors are affecting the Great Barrier Reef.