I was diving at Benga Lagoon off the south coast of Viti Levu in Fiji at a commercial shark feeding operation. About 50 bull sharks (notoriously dangerous) crowded in on the chum that was being supplied by a diver above. The sharks behaved impeccably considering they were in a feeding 'frenzy' (even though I did have to nudge them away occasionally with the camera) despite their aggressive reputation. This operation has given enormous value to bull sharks. As a result divers come from all over the world to witness the spectacle, injecting money into the native community and helping prevent shark fishing.