Hadrian's Bowl

Romarino was carrying equipment used for floating the objects to the surface. He fastened the four lighter pieces to inflatable balloons, and one by one, pulled a plug much like a pin in a hand grenade. The balloons inflated and rose upward, likely to be retrieved by Pepe. The two anchor parts posed a different kind of problem. There was no easy way to attach them to the line which would connect to a balloon, a much larger balloon. Joe glanced at his watch and saw there were now fifteen minutes gone of their twenty minute dive. As he stood by helplessly, Romarino struggled to tie each of the two ends of the anchor parts with a sailor's knot. Then he attached the two lines of each part to the larger balloons. As Romarino finished the task, he pulled the plug on the balloon tethered to the smaller anchor piece and it floated upward. He then pulled the plug on the larger anchor, but the ascending balloon stopped suddenly after ten feet. Joe was horrified to see that the line attached to the anchor was caught in Romarino's gear. He glanced at his watch again and saw that 18 minutes of the dive had elapsed. He swam over to Romarino, who was becoming frantic. He was thrashing around, trying desperately to find where, in all that equipment, the line could be caught. Joe saw that the line had slipped under Romarino's buoyancy compensator, which was attached to the front of his body, then seemed to be caught in his weight belt at his backside, and snagged at the top of his scuba tank. Joe started to untangle the line from the scuba tank, when he heard a terrifying sound from Romarino and his equipment...silence. Romarino’s exertion had made him breathe faster, so he had run out of air earlier than he expected. Now there were no bubbles.