Sharks have plenty of stamina - it comes from spending their whole lives swimming around in the ocean. There's no better way to show it than to put two sharks together with nothing else to do but fuck. Both of them have been assigned by Kellervo to sit out in a base in the middle of nowhere to wait for a new shipment of weapons, but until it arrives, they're absolutely bored out of their minds. Kalli's got the right idea though, getting Rip riled up with a low cut tank top, showing off the deep cleavage of those massive breasts - eventually Rip has to see if his cock will fit between those puppies, and then Kalli adds bit of tongue action which leads into brutal muzzlefucking action, grinding the base of his cock into her muzzle as he's lodged deep inside her throat - then there's a round two of her (trying to) ride him before he finally decides to just put those cuffs he carries to good use, dangling her from the ceiling before really letting loose with his thrusts. She's already covered and splattered in cum, but those massive balls are ready to unleash another torrent into her already stretched hole and deep into her womb - let's hope she wasn't planning on walking anytime soon. Either way, she's got a fantastic expression on her face, blissed out of her mind, what with the massive shaft pounding below, the hand choking her above, and the careless groping of those fat , bouncing, tits - he'll probably have to leave her there for a few minutes once he dumps his load inside her before coming back for another round. It's not against the rules to take a breather and clean your dick after all. It's only common courtesy. Let's just hope they get relieved soon, otherwise Rip will end up showing just how virile he can be.