“It’s getting a little, uh, cramped in here, isn’t it?”

The price for this excursion was too good to be true. “See the hidden world of the mermaids. Fully unobstructed view. Just three copper coins.” Jill had always wanted to see the mermaid village, but it was at the bottom of the sea, and the magic to safely reach the sea floor was non-trivial. Most wizards capable of it couldn’t be bothered with something so frivolous. The rest charged a fortune. Three copper coins was a steal. Right now, she wondered if she should have been a bit less thrifty.

The method used to provide safe passage to the deep sea was a magically conjured bubble. It provided breathable air, the shimmering glow of the bubble provided light, and its sturdy surface held off the pressure of the ocean. At least, that was the idea. Right now the third leg of that crucial triangle was looking a little shaky. The bubble had gotten significantly smaller as they descended. At first Jill didn’t mind. The “wizard” providing the tour was a young man of about her age. They were both dressed for swimming, which meant they were each showing lots of skin. Getting a little closer to him was kind of nice. But now the bubble had compressed enough to require them to invade each other’s personal space. That he was frantically flipping through a “spellbook” that had clearly been hastily copied from a far more legitimate tome didn’t instill a great deal of confidence.

What had begun as a bubble large enough for each of them to stand comfortably inside was now too small for either of them to straighten up. Crouching meant they were nearly nose to nose. Being so close to the handsome stranger made her blush despite the increasingly harrowing circumstances. She felt the smooth surface start to press against her bottom, the dwindling size forcing them still closer. With barely inches to spare, and already tenuous balance thanks to the curved floor, the nudge sent her tipping forward. She ended up forced into an awkward–but not unpleasant–kiss. The wizard’s eyes widened. She could feel the blush in his cheeks. After allowing the moment to last as long as she dared, she tried to back up… and found that she couldn’t. The bubble had reduced such that there was no room to pull away. She tried to turn her head, but her delay meant the pressure behind their kiss was such that they were quite literally lip-locked. That is, unless they could find a way to free up more room. They scrambled to do so, spreading their legs and kicking their feet up the curve behind their partners. Their butts slid along the smooth surface of the bubble. With legs intertwined the slippery repositioning, sure enough, gave them enough room to separate their faces… at the expense of instead pressing their crotches together. Almost immediately, the bubble had closed in on the back of their heads, gradually easing them back toward a kiss. But any attempt to struggle only rubbed their increasingly sensitive groins together.

The shrinking bubble continued to press in upon them. But slowly and steadily their struggles became less desperate and more wanton. Jill’s wriggling squeaked against the bubble and grinded her against her partner in his predicament. He huffed with increasingly lusty breaths through his nose as their forced kiss became deeper and more sensual. And still the bubble continued to shrink. The pressure was such that the surface of the bubble didn't budge in the least. It may as well have been glass. So as it got smaller, rather than their body stretching the bubble, the bubble compressed their bodies. When the last bit of space had been squeezed away, Jill felt her body begin to take on the curve of the bubble. It was painless, but not without consequence. As her body compressed, the sensitivity and the intimacy started to tick upward. Their bodies pressed closer. Her breasts mashed flat against his chest. Her arms and his wrapped into an unbreakable hug. There was no longer enough room for even the slightest hump or grind between their groins, but there didn't need to be. Even the throbbing pulse of his cock through their swimsuits was enough to drive her closer to the quickly building climax.

Smaller and smaller the pressure squeezed them. Jill felt like her whole body was a tightly squeezed clit, pinched and pressed and burning with arousal. The bubble, once the size of a small room, was now the size of a small beanbag chair. Were there anyone to see them from the outside, they would see a tangle of flesh tone and a hint of swimsuits, all coated in a glassy sphere. A sphere that continued to shrink. As the quivering, compacted passengers-turned-lovers continued to compress, their raw sensations became all the more intense. They struggled to even whimper as they were crushed into a diamond of pleasure. The bubble drifted smaller than a beach ball. Smaller than a melon. The soft, high-pitched, muffled moans were more insistent as it shrunk past the size of an apple. Smaller than a walnut now. Smaller than a marble. And finally, at the precise moment the impossibly compacted passengers finally found themselves tip past the point of orgasm, the bubble reached the bottom of the sea, now barely the size of a pearl.

For nearly an hour, the compressed couple remained there, nestled in the silt at the bottom of the sea, locked in an orgasm that refused to relent. While many of the promises made by the exploration company turned out to be false, one of them was completely true. The excursion did take them right to the mermaid village.

“Another one!”, trilled the lovely, plump mermaid that found them.

She swam up to the pearl of pleasure and plucked it from the sea floor. Admiring the beauty, she rolled it between her fingers. If she listened, she might have heard the almost fully muffled whimpers of the pressed lovers. But she was far too busy fishing something out of her bag.

“Finally, I can finish my necklace!”

A string of identical pearls reeled out of the mermaid’s bag, each with some combination of flesh tones and each imperceptibly humming and quivering with compacted passion. A whisper of magic linked Jill's pearl to the rest and the mermaid happily hung the string of satisfied customers around her neck.