Sailing Danger is a term used to describe the potential risks associated with sailing. It is important for sailors to be aware of the dangers that can arise while out on the water, such as storms, strong winds, and reefs. Reefs are areas of shallow water, often with rocks or coral, that can cause a boat to become grounded or damaged if not navigated carefully. It is important for sailors to be aware of their surroundings and take the necessary precautions when sailing near reefs.