They were on separate landmasses, but I'm not really sure this answers the question, you should try just asking google.
Answer:
Coral reefs are facing many threats such as physical damage, pollution that originates on land, overfishing, coral harvesting, etc
Explanation:
I looked it up on the web, you'll find more of the threats that coral reefs face if you search it up.
To make laws while other laws are in the making of others