...Second dive was the Princess Anne wreck. I burned up a whole tank at 28m / 91ft watching an adult nurse shark closely accompanied by approximately 200-250 green, bait-sized fish in the shape of a torpedo, enough to conceal a large part of the shark, and about 75-100 Jacks (trevallies) who were swimming in an outer orbit. The interaction amongst the three was absolutely captivating. The nurse shark was patrolling low and slow while the green bait fish swam excitedly but closely around the nurse shark. Periodically and unpredictably the green fish would just explode away from the shark and then just as quickly resume their tight slithering around the nurse shark. The Jacks would also periodically and unpredictably start their own dive bombing....