Mine was at on a bomie, at a site called the Temple of Doom on the Great Barrier Reef in Australia. It was not particularly deep--55 feet max. The bommie was a spire of coral, with happy little reef fish swarming all over it. It was called the Temple of Doom because as the happy little reef fish swarmed about it, they were being watched by the sharks, travally, and barracuda swimming circles around the spire, watching intently for any happy reef fish that might become a meal. It was watching all those predators swimming side by side that I had a revelation--the old scuba joke was true!
The joke is this--why has no lawyer ever been attacked by a shark? The answer: professional courtesy! It is true! Predators do not attack predators! Predators attack prey! That is why we can swim with them as well--we are taken to be fellow predators.