bottles from a pouch strapped to one thigh and began taking water specimen samples. She also collected dead star- and shellfish and dropped them in a netted bag attached to her weight belt. When the jars were sealed and securely resting in the pouch, she checked her air again. She had over twenty minutes of dive time left. She rechecked her compass readings and began swimming in the direction from which she had come, soon reaching clean and clear water again.
Casually observing the bottom that had turned to a small river of sand, she sighted the opening to a small cavern in the coral, one she hadnât noticed before. At first glance it looked like any one of twenty others sheâd passed in the last forty-five minutes. But there was something different about this one. The entrance had a square-cornered, carved look about it. Her imagination visualized a pair of coral-encased columns.
A ribbon of sand led inside. Curious, and with an ample supply of air in reserve, she swam over to the entrance of the cavern and peered into the gloom.
A few feet inside the chamber the indigo of the walls flickered under the shimmering light from the sunâs rays above. Summer slowly swam along the sandy bottom as the blue turned dark and became brown after several yards. She nervously turned and looked over her shoulder, reassuring herself at seeing brightness surrounding the opening. Without a dive light there was nothing to see and it didnât take great imagination to picture danger in the inky interior. She nimbly turned and stroked toward the entrance.
Suddenly one of her fins brushed against something half buried in the sand. She was about to simply dismiss it as a lump of coral, but the coral-encrusted object had a seemingly man-made symmetrical contour. She dug into the sand until the thing came free. Moving toward the light, Summer held it aloft and lightly swirled it in the water, cleaning away the sand. It looked to be about the size of an old-fashioned ladyâs hatbox except that it felt quite heavy, even underwater. Two handles protruded from the upper area, while the bottom gave the impression under the encrustation of having a pedestal base. As near as she could tell, the interior looked hollow, another sign that it wasnât created by nature.
Through the mask, Summerâs gray eyes mirrored skeptical interest. She decided to carry it back to the habitat, where she could carefully clean and determine what was to be seen under the accumulated coral sea growth.
The extra weight of the mysterious object and the dead sea life she had collected on the bottom had affected her buoyancy, so she compensated by adding air to her BC. Tightly gripping the object under her arm, she languidly swam toward the habitat oblivious of her air bubbles trailing behind her.
The habitat that she and her brother would call home for the next ten days appeared through the shimmering blue water a short distance ahead.
Pisces was often called an âinner space station,â but she was an underwater laboratory designed and dedicated to ocean research. She was a sixty-five-ton rectangular chamber rounded off on the ends, thirty-eight feet long by ten feet wide by eight feet high. The habitat sat on legs attached to a heavy weighted base plate that provided a stable platform on the seafloor fifty feet below the surface. The entry air lock served as a storage unit and a place to don and remove diving equipment. The main lock that maintained a differential pressure between the two compartments contained a small lab working area, a galley, a confined dining area, four bunk beds and a computer and communications console connected to an outside antenna for contact with the world above the surface.
She removed her air tanks and connected them with a bottom tank filling station next to the habitat. Holding her breath, she swam up and into the entry lock, where she carefully set the pouch and net containing her specimen samples in a