What the hell? What was he doing, and why was he on his own?
Checking quickly to make sure her students were all fine, she started going after him. This diver may not have been experienced, but he was very tall, making for a fast swimmer. When he reached the sinkhole, he didn’t slow down but cruised right over it, staring down into it as if mesmerized. Then he suddenly stopped, suspended above it.
Nicola was still about fifty feet away from him. She swam harder, not letting him out of her sight. Judging from this diver’s behavior, she had a suspicion of what was going on. It was unusual for it to happen at this depth, but certainly not unheard of: nitrogen narcosis. She’d seen it several times in her diving career—a state of euphoria and invincibility, much like that caused by narcotics, induced by breathing air at a higher pressure than the atmosphere. It was imperative that she get to him before he got any bad ideas—like letting all the air out of his BCD so he could swim to the bottom of the sinkhole, for example.
Forty feet away…thirty-five—
Nicola saw something from around the diver’s waist drop into the abyss. Her heart stopped.
The diver’s weight belt had slipped off, she realized, and now one of two things could happen. Either he would rocket straight for the surface and get a life-threatening case of the bends, or he could panic and very likely spit out his regulator. She hoped upon hope it would be option number two, because then at least she’d have a chance to get her spare air supply into his mouth before he drowned. Muscles burning and heart galloping, she put on a burst of speed, knowing that she still had to keep her breathing under control. If she sucked in too much air, she wouldn’t have enough left in her tank to get both of them safely to the surface.
Twenty feet—
Nicola watched the diver’s body language as he registered surprise, confusion—he was starting to rise upward—but then the best thing possible happened. She saw his arm shoot out to grab his inflator control, which meant he was doing what he was supposed to—removing the air from his BCD to keep himself from rocketing up to the surface.
Ten feet—
But oh, God, no—he’d hit the wrong button. This, too, was something she’d seen happen before—the buttons were different shapes but close together, so sometimes in a panic a diver would hit the fill button instead of the expel button.
Fifteen feet now as he floated up and away from her—
Adrenaline kicked in, but Nicola’s muscles still screamed. Her breath tore out of her lungs—not much chance of giving him air now, but she had to do something—and finally she was close enough to take a lunge at him. Reaching her hands up, she used her fins to propel herself upward and managed to close one hand around the tip of his fin. Her other hand closed around the edge of his second fin, then she clawed her way up until she could grab his ankles. She had a hold of him now, but it could still mean both of their deaths if she didn’t get to his inflator control to let his air out. She used the same arm she had locked around his legs to let the air out of her own vest by its built-in button, then used her other hand to take a slow-motion whack at the diver’s forearm. He dropped the inflator control and it floated slowly down toward her. Nicola snatched it up and pressed the expel button, doing a strong reverse frog kick with her legs to try to pull them downward.
And then she prayed.
Long, slow, deep breaths to conserve what little air she had left. Pretty much impossible at this point, but Nicola focused on it all the same to try to quell the adrenaline pumping through her veins. She still had her arm wrapped around the man’s waist with her head near his hip. She reached for her dive computer to read her oxygen level, though she already knew from her increasingly labored breaths that it was dangerously low. The number flashed at her in urgent red digits—80 PSI. Just enough to get her to the surface if she started her ascent in about one minute, but that didn’t help him any. At least they weren’t rising anymore—they seemed to have leveled out at around forty feet. Nicola employed a few more reverse frog kicks to pull them down a little farther, calculating that they’d now have to stay at this depth for about three more minutes to compensate for their initial rapid ascent. Going up any sooner put them both at serious risk for decompression sickness, a potentially lethal condition where gaseous bubbles formed in the bloodstream.
Sliding her hand up the diver’s chest, Nicola reached behind his left shoulder and pulled her arm forward to catch the tube attached to his dive computer. She caught the device in her hand and looked down at his oxygen: 50 PSI.
It was decision time—release him to his possible death but save herself, take both of them up now come what may, or try to share what little oxygen she had left with him.
There was no question. She swept her arm backward to catch her spare air supply, then pulled his regulator out of his mouth, replaced it with hers and hit the purge button.
WHEN ALEX’S HEAD broke the surface of the water, cold fear was still pumping through his veins. Just moments ago he had been quite certain he was about to draw his last breath. Ripping his mask off with shaking hands, the only thought in his mind was: he’d been a fucking fool to ever think he could do this. Quick on its heels, fueled by his extremely damaged ego, was the thought that he never wanted to face the person who’d been stuck with saving him. Given the choice between terror and humiliation, he chose a third option—outrage.
“What the hell happened down there?” he sputtered to Rusty after he’d yanked his regulator from his mouth. No, not his regulator, not even his rescuer’s—the device he’d just pulled from his mouth was the spare air supply that his own instructor had had to save him with. After Rusty finally got the memo that things had gone south with one of his students, he’d taken over the job and relieved Alex’s real rescuer so he or she could surface and save their own life. “You let me lose the group on my first dive? My fucking belt falls off?”
Beside him, Rusty yanked his mask down around his neck. “The important thing is that you’re all right,” he said soothingly, waving to his driver to pick them up. “Let’s get on the boat and I will explain.” The driver spun the boat in a semicircle and then backed up toward them, expertly placing the ladder within Alex’s reach. He grabbed on to it and heaved himself out of the ocean, feeling water gush down his legs as his wet suit drained. Four pairs of eyes—those of his fellow divers, comfortably seated on the benches—turned to look at him as he stumbled on deck. Great. Now he had an audience, as if he didn’t feel stupid enough. And he knew very well how he’d just sounded—like one of those pompous assholes that Alex himself hated, the ones who tried to blame everyone else for their failings. Still breathing heavily with exertion and adrenaline, Alex sat down on the bench and leaned his head forward with his elbows on his knees, trying to get himself together.
Rusty dropped down beside him. “Another diver got caught in fishing line, so I had to stop and cut him out. It happens sometimes.” When Alex didn’t respond, Rusty calmly went on. “You swam away from your buddy. Your belt slipping off was a piece of bad luck. I came for you as soon as I realized you were missing, but thankfully someone else got to you first.”
Alex shook his head with his eyes focused between his feet. He still didn’t understand what the hell he’d been thinking. He remembered gazing out at the sinkhole from the reef, and then an overwhelmingly optimistic feeling bubbling up in his chest. He would do more than get over his fear, he remembered thinking—he’d fucking obliterate it. And then he’d started swimming toward the sinkhole like he was under some goddamn spell or something. To say he was furious with himself was an understatement. He’d thought