They decided to go to marine exhibition, and saw at the map that marine exhibition is next at canine exhibition, which is not to far from where they standing, and quickly head there
Arriving at the exhibition, they were greeted by a zookeeper, "Welcome to the marine exhibition, my name is Fransesca, the marine exhibition guards for today, please handed the invitation, please", Tom handed her the invitation, "Alright, follow me, please", both boys followed Fransesca to the empty hall, an there's only a table with many syringe at top of it, "Umm..Miss-", "Just call me Fran", Josh nodded, and asked, "Fran, what's those syringe for?", "Those? *giggles* turn you into a humanoid marine creature, of course", both boys are shocked, that was a very crazy situation, they will became a marine creature itself!? "Well, please pick one of this syringes, undress at that room-", she pointed at the door next to the table, "-put those syringe and swimwear we provided, and you ready to go"
Both boys picked the shark syringe, and headed to the room without any question, and began undress themself, revealing naked, sexy boys at the room, the room began filled with lust, but they resist it and began to use those syringe, then something happened..
Muscles began to inflate from their bodies, made their bodies changed to the professional bodybuilders, and their rod began elongated, so their balls, and their also started bigger, making Tom's current statistic is 7 feet and 2 higher, towering Josh who only 7 feet high, but Josh's "weapon" rivaling Tom with 8 feet higher , while Tom's only 2 inches shorter
They were happy with their new body, and started flexing their new muscles, as they could see a blue scale began spreading through their bodies, fins started sprouting from their hairtop, ankles, knees, and their back, shark tails sprouted from their bottom, and their head change into shark, and gills began appeared at their neck, strangely, they still can breath outside water
After the transformation completes, they put their swimwear on, Tom picks a blue speedo, and Josh picks black speedo, and heads to an empty tank for swimming, inside, they flex their awesome muscle, "It's seems you happy enough with your new form", Fran smiles, as the boys finish their fun, they began came out from water and decided what to do next..