Ship wreckers are individuals or organizations that intentionally cause ships to become stranded on a REEF or other shallow area in order to salvage the cargo and other valuable items from the ship. This practice has been around since ancient times, and is still used today in some parts of the world. The term 'REEF' is used to describe an area of shallow water, usually with rocks or coral, that can be hazardous to ships. Ship wreckers use this knowledge to their advantage, luring ships onto the REEF and then salvaging the cargo and other items from the ship.