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“Hey, did you hear someone found some treasure down by the beach?” Hilda asked.
“Wait, really?” you gasped, dropping your sandwich on your plate, “What kind of treasure?”
“Shhh, not so loud!” Hilda whispered, clamping her hand over your mouth, “You want the whole room to hear you?”
“Smmrry,” you murmured.
You and Hilda were eating lunch at one of the couples’ tables in the dining hall, and while normally most wouldn’t be able to hear you speak normally, shouts tended to echo around the room quite well.
“It’s a chest full of gold and jewels,” Hilda explained, her eyes glowing with excitement, “One of the other students mentioned it to me, so I snuck into his room last night and swiped his map!”
She removed her hand from your mouth and reached into her purse, pulling out a piece of paper.
“See?” said Hilda, “According to this map, the treasure is about five hundred feet off the shore. He could only get a few things since he was running low on air, but if we go down there, we’ll have all the treasure for ourselves!”
“Whoa,” you said, “So, do you have a plan?”
“Uh huh,” Hilda nodded, smiling deviously, “I’ll write a note to the Professor saying that we both have to leave for…uh, well I’ll come up with something. Then, we’ll get our scuba gear and head over to the ocean. With this map, we’ll be able to find the treasure quite easily, and even if we don’t get everything on one dive, we can always come back for more later.”
“Sounds good to me,” you smiled, getting up from your seat.
Hilda’s plan worked without a hitch. The Professor barely raised an eyebrow when they received Hilda’s note, so the two of you were ready to go. Once you arrived at the beach, both of you stripped down to your swimwear: a pair of swim trunks for you, and a skimpy pink bikini for Hilda. Next, the two of you put on your scuba gear, helping each other with the heavy oxygen tanks and doing the necessary checks to make sure everything was working properly. Finally, both of you waded into the ocean until the water was chest-high, ready to dive.
“You got the map?” you asked, tightening the strap on your mask.
“Yep!” Hilda beamed, waving it around as she fiddled with her air tank’s shoulder straps, “Follow me!”
You and Hilda put your regulators in your mouths, gave each other the okay sign, and submerged. Hilda swam off into the deep at a surprisingly quick pace, and you followed her, eagerly anticipating what you’d find. The murky shoreline water turned clearer and clearer the further out you went, giving you a much better view of the ocean around you.
The clearness of the water also gave you a fantastic look at Hilda herself. Hilda was incredibly sexy, you’d been dating her long enough for that fact to just be a given, but her bikini and scuba gear only accentuated her attractiveness. You could see Hilda’s gigantic breasts sway from side to side, her long pink pigtails flowing out behind her like streamers, her shapely ass jiggling slightly. Just the sight of your girlfriend like this was enough to make a bulge appear in your swim trunks. Hilda seemed to notice you checking her out, and she gave you a flirtatious wink.
After a few minutes, you finally reached the spot on the map: a circle of sand surrounded by rocks and a bed of seagrass. Hilda gestured for you to go down and search for it, and you didn’t hesitate to do so. You brushed aside some sand at the center and found…nothing. Brushing away more sand didn’t reveal anything either, and even though you kept digging through the seabed, you couldn’t find anything. Maybe someone else had gotten to the treasure before you, but then how was the seabed so pristine-looking with no signs of being tampered with?
Just then, Hilda swiftly grabbed your swim trunks and yanked them down, exposing your erect cock. You whirled around to find that Hilda had already removed her bikini top and bottom, showing off her huge tits and pussy. Before you could do anything else, she floated herself down onto your crotch, letting your penis slide right into her vagina.
In that moment, thoughts of the supposed treasure fled from your mind, and all your focus was now on fucking your girlfriend. You placed your hands on Hilda’s waist and started thrusting your dick in and out of her pussy hard and fast. You’d had sex with her enough times to know she loved it best when you were as rough as possible, especially underwater.
“Oommff…oommff…oommfff…,” Hilda moaned into her regulator as she bounced up and down on your cock, her massive boobs bouncing along with her.
Pounding Hilda’s pussy never got old, or at least it hasn’t yet in the many, many, many times the two of you had sex. The “plap plap plap” sounds of her ass hitting your waist were so satisfying, even muffled underwater. As you kept fucking Hilda, you slunk your hands up from her waist to her enormous bouncing breasts, and you started to grope them, much to Hilda’s delight. Her boobs were so meaty and squishy, you found it immensely enjoyable to squeeze and knead them to your heart’s content, pinching her hardened nipples occasionally for good measure.
“Mmmnnbbff…,” Hilda murmured into her regulator, her tongue running along the length of the mouthpiece, having completely given into her state of arousal.
After holding back for a bit, you finally climaxed, blasting a massive fountain of semen up Hilda’s pussy. Hilda arched her head back and let out a long muffled moan of pleasure as you kept cumming inside of her. It felt like your cock would never stop, you sent burst after burst of cum into Hilda’s womanhood like you’d never get the chance to do so again.
Once you finished up your orgasm, you took your cock out of Hilda’s vagina and pointed up at the surface. She nodded and gave you the okay sign, and the two of you swam up to the surface. You loved having scuba sex with her, but you still wanted answers on why you came here.
“So, I’m guessing there was never any treasure down here,” you smiled slyly after spitting your regulator out.
“Nope!” Hilda grinned, “I just wanted an excuse for you to fuck me underwater again.”
“I mean, you could’ve just asked me to fuck you,” you noted, “You know I would’ve said yes in a heartbeat.”
“Yeah, I know,” Hilda shrugged, “I don’t even know why I made up that stupid treasure story in the first place.”
“To be fair, that map did look pretty convincing,” you said, “Besides, I did find myself a treasure down there.”
“Really? What?” Hilda asked.
“You,” you beamed, leaning in to kiss her.
“Aw,” Hilda giggled, kissing you back.
“So, uh, ready to go for another round?” you asked, checking your air gauge to see if your tank had enough air.
“Allwwdy wwwy uh’hhd uff yhh,” Hilda murmured, having already stuffed her regulator back in her mouth.
“Then let’s go,” you smirked, biting down on your mouthpiece and submerging yourself once again.