Tell Tide to go have fun with himself

"Sorry, I don't have time for 'fun'," you say. "I have to get out of here and find that evil sorcerer who trapped me in here. Now, if you know how to make this water behave--"

"What if I do?" Tide asks, still grinning at you.

"Then do it!" you snap. "Let me go!"

"Or what?" His grin suddenly goes from playful to predatory. "I don't think there's a whole lot you can do to me right now, but I...I can think of a lot of things I can do to you."

"Just try it," you say, clenching your fists and raising them in front of you. "You come near me and I'll--"

"Oh, yeah?" Tide says, rising up out of the water. You were right, he isn't human. Instead of arms, he has flippers, and from the chest down, he's some kind of dolphin or porpoise. He raises one of his rubbery flippers and a wave rises up above the surface of the water and wraps around one of your fists. You try to pull away, but it's like pulling against a steel chain. The wave sinks back beneath the surface, drawing your arm with it.

"Stop this!" you shout, but Tide just laughs and raises his flipper again. Another wave seizes your other arm and pulls it under the water, holding you helpless. Tide swims closer and runs the tip of his flipper down your back and over your naked ass, making you shiver.