Rough Waters - Cover

Rough Waters

Copyright© 2025 by soopad00pa

Chapter 12

BDSM Sex Story: Chapter 12 - Jack introduces his much younger girlfriend to BDSM and then her little sister joins them on a boat trip.

Caution: This BDSM Sex Story contains strong sexual content, including Ma/Fa   Ma/ft   Fa/ft   Mult   Consensual   NonConsensual   Incest   BDSM   Rough   Group Sex   Anal Sex   Sex Toys   Squirting  

It was the last full day of my time with my girls - they had to get on a bus tomorrow morning and go back to reality. We got up early and motored around to an anchorage on the far side of Fleming Key in Man of War Harbor. That put us in reach of another small reef just south of the western end of the islands.

Piling into the dinghy was a slightly muted affair - we’d had a great, but exhausting night of sex and slept like logs, all of us. Waking up, we were faced with the end of this magical bubble of intimacy, and while we all knew we’d be back together soon enough, none of us wanted it to end. Not even me. Weird.

Zooming out into the gulf, bouncing on the small waves, we just enjoyed the early morning sun and the wind and spray in our faces. We were the second boat to arrive and quickly got our masks and fins on and splashed into the water, kicking for the reef.

As soon as we got to the reef we saw a pod of nurse sharks lingering on the sea floor under the edge of a big bommie. I poked the girls and motioned them back to me.

Surfacing, I said “Nurse sharks are super mellow. Most of the time. Just go slow when you’re close and don’t stick your finger in their butts.”

“Ha!” barked Anna, “guess you won’t have anything to do then!”

“They’re sharks - how safe is this?” asked Beth.

“They’re little sharks. Also, famously docile,” I said. “Still, don’t fuck with em - they have plenty of teeth.”

The water was only about eight feet deep here so it was easy to get close. I drifted down to the bottom and slid within a couple feet of them and just lay on the sand, watching for a few moments. Then I slowly backed out and went up to get a breath.

Following my example, the girls took turns getting close to the group - the little sharks lazily circled amongst themselves, taking turns in the shelter of the coral and keeping an eye on the interlopers. Soon, we’d had enough of the nurses and moved into the field of rock and reef.

The reef was more rock than coral, but there were plenty of fish - a ton of big black and white striped angels dominated the area. The other divers were spearfishing for lionfish - an invasive species from the Pacific Ocean that had taken root in the Gulf and the Caribbean. Pretty much every local government was happy for divers to kill as many as possible.

We watched a young dude spike one and stuff it in a sack with a couple others. They were supposed to be tasty, but I’d never tried it.

We spent an hour or two exploring before climbing back into the dink.

“I’m definitely back on Team Boat,” said Anna. “Swimming with sharks! I feel like, so cool!”

“You are cool, you dork,” teased Beth. “What’s up with the spiky fish that guy was spearing?”

I explained about lionfish and their troubles. “I bet that dude would happily give you a couple if you wanted to try em,” I said.

“Nah,” Beth said. “They’re kinda puny. After you get off all the spikes, I bet there’s not much left - doesn’t seem worth the hassle. Have you ever spearfished?”

“A bit,” I said. “It doesn’t thrill me like it does some folks. Also, one of the first times I went, there were a shitload of sharks hassling us. Not nurse sharks, either. Kinda dampened my enthusiasm.”

“Hassling?” asked Anna.

“Circling around. Bum rushing us. One of the people I was with lost a fish to a shark - snatched it right off his spear out of his hand. Kinda spooky.”

“Oh, hell no!” grimaced Anna. “I’ll get my fish at the store!”

We headed back toward the boat and stopped for lunch at a place right by the cruise ship piers. I had a black and bleu burger with some pretty decent potato wedges. Anna had fish tacos (not as good as Marj’s) and Beth had a chicken quesadilla. We all had Mexican cokes again.

I finished first, just like always, and sat looking at my girls as they stuffed their faces.

“What?” Beth mumbled around her lunch.

“Just watching, enjoying the view,” I smiled. “I’ve had a pretty great week.”

“Awww, daddy,” Beth’s lip trembled. “Shut up or I’m gonna cry!”

Anna laughed, “You’re already crying!”

“I don’t wanna go home!” wailed Beth.

I took her hand and squeezed it. “Not like I won’t see you guys in a week or so anyway.”

Anna stopped laughing abruptly. “Us guys?” Her lip trembled. Oh boy.

“Well, I’m hoping you’re a package deal,” I said. The sisters looked at each other and their crying intensified. Our waitress came over and immediately pivoted on her heel and left for a better table. Anna took my other hand and for the next few minutes I sat in the restaurant holding the hands of two crying girls. My life was strange. Good, but strange.

The wind had picked up - nothing crazy, but it was a bouncy and breezy ride the short hop back to the boat. We were at the far edge of the anchorage which gave us a bit of privacy but also less shelter from the weather. I checked the forecast and supposedly it would blow a bit until sunset and be dead overnight again. We shall see...

On the plus side, air flowed freely through the boat so it was much more comfortable than it had been the last couple of days. We lay naked and curled together in the pit, letting lunch settle, the girls on my chest, fingers tangled in my chest hair, as usual.

In a small, hesitant voice, Anna finally asked, “Am I part of this? Like, with you guys?”

Beth reached across to hug her sister through me and looked up at me, waiting for me to answer.

I squeezed them both tight. “Yes,” I said. “This is not without complications, but I sure want more of this. Beth?”

She nodded vigorously and their faces screwed up and they both started sobbing. I kissed the tops of their heads and waited.

Eventually the sobbing became sniffling and the sniffling became giggling. Then Beth punched me. “You are so fucking lucky, old man!”

“It ain’t luck, little girl,” I said, “it’s skill.”

“Show me these skills again,” said Anna, crawling atop me, straddling both my cock and her sister’s hips. Beth reached down and rubbed my stiffening shaft through her sister’s slippery bits. I gripped Beth’s ass and kissed her hard and in moments Anna sank down onto me and began swivelling her hips against me as I pressed into the recesses of her body.

Beth held my face in her hands as her sister rode me, moaning as her clit ground against my pelvis. “Save some skill for me,” she murmured as we kissed.

“I love your cock, daddy,” Anna sighed as she rode me, watching me make out with her sister. I had an ass in each hand - I was pulling Anna into me and I was kneading Beth’s firm flesh as she tangled her lips with mine. Beth reached out and took Anna’s other ass cheek in her hand and we were both tugging her little sister into me.

“Ohhh, sooo good,” Anna said, “but I know you hate being on the bottom, daddy - c’mon!”

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