It was midafternoon on a midsummer day, and for some reason the neighborhood pool was nearly empty. In fact, the only two people there were a male otter, serving as lifeguard, and a young male seal. They knew each other, vaguely; Alan's mother usually left him to his own devices in the afternoon, which Mark had learned over the course of the summer. Mark sat in the customary throne of the lifeguard, watching the young seal out of the corner of his eye, until a muffled chime came from his waterproofed phone. He'd arranged through a friend of his to ensure the pool was 'closed' this afternoon in exchange for, at the very least, pictures. More than that depended on how the afternoon went. This chime was the text he'd been waiting for, so Mark quietly descended from the lifeguard's chair, slipping silently into the pool as Alan swam an idle lap away from him. It didn't take long for the otter to overtake, and when he did, he grabbed the boy and pulled him close. The positioning gave him an ideal angle for him to start on the appetizer course: the pup's nose. Mark pulled a ball gag out of his swimming trunks first and stuffed it into Alan's muzzle even as the pup started to protest the first painful nose bite, securing it in place even as he bit the boy's nose again. Underwater, the adult's trunks began to bulge with his erection as he continued to bite the young seal's nose, rendering it quite bloody. He shifted the seal slightly, freeing an arm to allow him to free his throbbing shaft from its confines, followed by pulling the back of Alan's own trunks down. Tears were streaming down Alan's face by now; he had no idea the formerly nice otter would be so mean to him, nor did he realise what Mark was about to do until, accompanied by more nose-biting, a stiff, warm rod buried itself in his ass to the hilt in one sharp jerk. After that, he inhaled water as his muzzle was soon forced underwater, that rod starting to thrust itself in and out of the boy's arse. Meanwhile, Mark had pulled his phone out, one paw keeping the seal's face underwater, and took a few pictures: of the seal's blood-streaming face, of his shaft plowing that same seal's ass, and, purely for himself, his own bloody muzzle. The phone was soon pocketed again, at which point the freed hand grabbed the boy's hips. It wasn't long before a rough pattern of thrusting emerged, interspersed with letting the struggling seal up for air before he could pass out altogether. What was pleasurable for the otter was anything but for the pup, though despite that the pounding on his prostate caused the seal's shaft to emerge as well. His ass burned, his jaws were getting sore from the ball gag shoved in his mouth, his bleeding nose made it difficult to breathe even without his head being held underwater for a minute to a minute and a half at a time, and he felt betrayed by his own body despite his attempts to bark his displeasure. He struggled as much as he could, but his best efforts were no match for the otter's lust-boosted strength. As Mark approached his climax, he considered how to conceal his handiwork. Ultimately, he decided his friend would appreciate the prize more than he would the pictures, so the next time he put the seal's muzzle underwater, he didn't let up. The seal's thrashing became more frantic as the minute stretched agonizingly to two, before he went limp by three. The otter barely managed to strangle a conqueror's yelp as he flooded the now-dead seal's rump with his seed. After about a minute, he pulled out and released the corpse to float on its own even as he phoned the friend of his. "Yo Keith, it's Mark. How'd you like to taxidermy a pup?"