Rick carefully checked his equipment, something that no diver can ever take for granted or leave to someone else, while Scotty did the same. Then they put the equipment on and adjusted face masks. Their knives, Rick's camera, and Scotty's spear and gun were somewhere near the wreck. They would have to get them another time.

The group entered the water. Rick looked around and oriented himself by the position of the Water Witch, then led the way with Scotty, Steve, and Jimmy swimming along with him while the Navy frogmen stayed closed behind.

It was a thrill for Rick to be swimming with the famous UDT frogmen. He looked to the side and saw that Steve was perfectly at home in the water, and he marveled at the adaptability of the JANIG agent. Steve hadn't been joking when he said he would be an expert by nightfall.

At the reef Rick turned northward and led the way toward the level of the cave. A few moments later he hooted for attention and with pointed finger showed it to Steve and Jimmy. The octopus was still there.

A frogman swam over and picked the little creature up. The octopus spurted away, leaving a blob of ink behind. He came to rest above the cave, poised for further flight.

Rick swam down to the sandy floor of the cave and began to search for the brass ball. Scotty beckoned, and they swam together toward the spot where Scotty had last seen it. The frogmen swam to the bottom with them, then fanned out, searching.

A few moments later someone hooted, and a tanned, muscled frogman swam over, holding the object triumphantly.

Steve Ames pointed to the surface and Jimmy hooted an order. The group swam leisurely up through the murky layer, oriented themselves by the sleek shape of the destroyer escort hull, and emerged at the landing. The frogman who had found the ball handed it up to Hobart Zircon.

Steve Ames motioned to one of the frogmen. "Run these fellows over to the beach, please, then wait and bring them back." He turned to the boys. "Put on dry clothes. Then come on back. We need to talk."

An hour later the boys, the scientists, Steve, and Kelly were seated at a table in the destroyer escort's tiny wardroom, noses twitching over the savory steaks that were being served. The boys ate like starved men, talking a steady stream between bites.