Sandy is a gorgeous woman. At 38 she looked better than most women at 21. It is always difficult to fit into my wetsuit while watching her force herself into hers. Sandy liked to wear a bikini under her custom fitted wetsuit. As she bent over to pull the 8mm farmer john on, I enjoyed watching the bottom of her swim suit ride up her smooth, supple ass. It is always a struggle for her to get into her suit. The fit was about as tight as it could be, without restricting blood flow. First the right leg. She would pull the rubber over her foot and then snug it up around her leg. Then the left leg. Gently tugging at the neoprene to force it up over her calves. Finally, she would roll the rest of the suit up and over her chest. The rubber would squeeze her tits up hard and her nipples could be clearly seen, even under the neoprene. Once the farmer john's were on, Sandy could relax, since the vest would not go on until we were ready to enter the water. We were at Monastery Beach in Carmel. It is an unusually warm day for Carmel. Generally, the weather is as cold as the water (52 degrees), but never anything that a good, thick, wetsuit cannot protect you from. We have no boat, so we must enter from the beach. Sandy's face is starting to get flushed from the pressure of her tight suit. Maybe it is too tight, but it follows the contours of her body precisely. The black rubber is accented by her long blonde hair and her light, soft skin. "Well, let's get going" I say to her. "Are you sure that we should be doing this?" she asks nervously. "Absolutely. You trust me don't you?" With that we put on our jackets. Sandy slides her leg into the right leg hole of her jacket, and then pushes her arms into the suit. She flexes her arms forward, much like a body builder would, in order to get the air pockets out of her back. She reaches down to the left and joins the zipper around the thigh of her left leg and begins to zip it up. She stops just below her breasts. She reaches down and picks up her hood. "I hate pulling this on", she says "It always pulls my hair out". She grabs the collar and works the hood over her head. Her face puffs up and is deep red. "This is really tight". She zips the rest of her jacket up and puts on her weight belt. "Can you help me with my tank?" she pleads with me. "Remember our agreement!" I retort. She picks up her bc and slides it onto her back. I think back to last night when she was in charge. She loves to make me wimper and plead in bed. Tie me, whip me, I love it. We had agreed that she would be the bottom today, when we go down. It was my turn and she knew I would not be easy. We had agreed on a "safe signal" for this dangerous game. Three knocks on the side of the tank with the "clacker" ball. This meant that one hand must be free at all times. Retraint would be a challenge. "Are you ready?" I ask her. "Yes, Master". I carefully check the valve on her tank and her pressure gauge. "3000 psi, looks good" I respond. "Get on your hands and knees, and crawl..." She drops down on all fours and slowly starts to back down into the water in a revers crawl. The waves are small, and she could easily walk in, but I make her crawl. I walk along side her, a little ahead of her. I see her tight ass under her rubber suit and visualize it earlier when she was climbing into the wetsuit. My cock is rock hard, but the cold water will soon change that. The first shot of cold water down your back is always the worst. This is the water that will later keep you warm, but when you first get in it is cold. I can see that Sandy has already endured the first shock of cold. We inflate our bc's and start a surface swim out to the kelp beds. Not too far, but far enough to make you pant. When we reach our dive spot, in about 60 feet of water, we start our decent. Regulators in our mouths will prevent verbal communications. Movement is slow and deliberate. Mistakes could be deadly. At 62 feet, we hit the bottom. We adjust our bc's so that we are neutrally buoyant and don't drag on the bottom. Now the fun begins... From the pocket of my bc I extract a pair of handcuffs. The key is attached to my vest with a spare pinned inside my vest pocket. A eye hook is cemented to the ocean floor with a buoy on a line attached. I grab Sandy's left hand and cuff her to the eye. I can see now that there is more fear in her face than ever before. From my pocket I now extract some 1/4 inch line which I use to bind her feet together. Once securely bound, I reach down and inflate her BC. She drifts upward until her left arm is fully extended and there is good positive pressure being exerted on her. I reach over and grab the zipper on her jacket. It is difficult to get a good grip on under water, but I manage to have it well in hand. Sandy starts to squirm in fear. If I pull the zipper down, even a little, a flood of cold water will enter her wetsuit, making her extremely uncomforatable. I yank and tug at the zipper, but release it before she is treated to the cold water. Instead, I reach down to my leg and remove my knife from it's holster. I carefully spread Sandy's legs apart and begin to make a small incision in the croch of her jacket and then through to her farmer john. I stop when I think that there is still a few centimeters of neoprene left between the blade and her lovely cunt. Once again, I reach into my bc pocket and remove a specially modified 10" vibrator. I used some "O" rings to seal the base where the batteries are stored, from water infiltration. Slowly with mild pressure, I press the vibrator into the small incision that I made in Sandy's suit. The pressure is not enough to puncture through the remaining rubber, so I press harder. I feel the rubber rip. Before I can release the pressure that I am applying, the vibrator plunges deep into Sandy's surprisingly wet pussy. I look down at her face and see some sense of relief that I did not ram hard enough to puncture her internal organs. Now I try turning on the switch, and to my surprise, I can feel it start to vibrate. I leave it deep inside her. 15 minutes have passed and I check both our air. 2100 lbs...looks ok. But I think that Sandy needs to save her air. I indicate to her that I am going to turn off her tank valve. She shakes her head...no, but also no safe signal. Did she forget what it was? I proceed. Sandy drops her regulator from her mouth and starts to open and close her mouth as if gasping for air. I reach over to my octopus (second regulator) and wave it in front of her face. She reaches out with her right hand and tries to grab it, but I pull it away from her. As soon as her hand is away from the octopus, I place it into her mouth and she takes a deep, hard breath. The vibrator is still buzzing away. Before she can get too comfortable, I remove the octopus from her mouth. I also reach down and pull the vibrator out of her. Once more I reach into my bc pocket and extract the last two items I brought with me, a banana and a bag of peas. Its time to feed the fish. And there just happens to be a school of perch nearby. I release the peas into the water and the fish come swimming over. Boy are they hungry! In my excitement about the fish, I realize that Sandy has not had any air in some time. I place the octopus back into her mouth. Now, I peel the banana and break off a small piece. I smash the piece and release it into the water. The fish readily gulp it down. The remainder of the banana I plunge into Sandy's rip. More peas and the fish draw nearer. Finally, a larger perch moves in and darts at the banana and takes a small nibble. More peas...more fish...a feeding frenzy. Sandy squeezes the banana with her pussy and more of it slips out into the water. The fish are pecking at her and she is squirming in pleasure with each bite. I note that the pressure in my tank has reached 1200 lbs and it is time to release Sandy from her watery restraints. I deflate her bc and ease her back to neutral buoyancy. I unlock her cuffs and she unties her feet. I turn her air back on. We swim towards shore and finish the dive on the beach. Once on the beach, Sandy helps me out of my equipment and I help her out of hers. Before I can get out of my wetsuit, she is on top of me with her dive knife out. Methodically, she cuts through the neoprene to my stiff cock, which is easily identifiable. She whips it out and rams it into her rip. We lie on the beach, Sandy riding me up and down. Deep and hard. The neoprene rubbing my cock for it's entire length on each stroke. I cum deep in her and leak out into her wetsuit. Sandy whispers to me "You know how I am going to rinse the sand out of my suit? I am going to piss." With that she gets up on her knees and places her rip directly over my face. I open my mouth and small drips of her golden passion leak through the rubber and into my mouth. It tastes like nectar. She lowers her rip down onto my face, straddling my head with her legs. "Open my tear with your tongue and drink my piss you fucker." I lash out with my tongue at the incision that I made and pry it open. Just as I feel the familiar sensation of her pubic hair on my tongue, a gush of salt water and piss floods into my open mouth. My cock, which is still popping through the cut of my suit, is throbbing and still unbelievable hard. Sandy finishes me off by mounting me one last time. No decompression sickness, no bends, no aneurysm, just submission and pleasure.