A boat hazard is any danger that can be encountered while operating a boat. Reefs, traps, ponds, and sandbars are all potential hazards that can cause damage to a boat or put the passengers in danger. A REEF is an underwater formation of rocks, coral, or sand that can cause a boat to crash if it is not navigated around properly. A TRAP is an area of shallow water that can cause a boat to become stuck. Ponds are areas of still water that can be difficult to navigate due to their lack of current. Lastly, sandbars are shallow areas of water that can cause a boat to run aground if it is not avoided.