Another true story. When I was 22 I got a job at the Heron Island Resort on the actual Great Barrier Reef as a yardsman. Part of my job was to get rid of the resort kitchen food scraps twice a week. This was back in the days when there were no laws protecting the Great Barrier Reef. Me and another guy would load up a flat bottomed aluminium punt boat and take around 16 garbage bins full of food scraps to Wistari Reef a long way from Heron Island. The resort had been dumping food scraps like this for over 20 years and every shark in the area knew it and they would be waiting for us. The water is crystal clear so the first time I did this I thought there were hundreds of fish deep down under the boat. As we dumped the food they would come up all around the boat and of course they weren't fish, they were sharks with some big Tiger Sharks among them. I once saw a Tiger Shark launch clear of the water to grab a seagull that was hovering over some floating food scraps. If you fell in the water you would have been torn apart. Big feeding frenzy every time.