Sharky the shark was eagerly swimming back and forth, his teeth glinting in the sunlight as he looked forward to the festivities. Tina the turtle plodded along with a basket of seaweed balloons, while Finn the dolphin performed acrobatic flips above them, his sleek body cutting through the water effortlessly. "Finn, could you help me with these balloons?" Tina called out, her voice gentle yet firm. "Of course, Tina! Let's make this the best party ever!" Finn replied, his enthusiasm infectious as he swam over to lend a fin.

"This looks amazing, you guys! Thank you for helping me celebrate," Sharky said, his voice filled with gratitude. Tina smiled warmly, adjusting a driftwood sign that read "Happy Birthday, Sharky!" while Finn arranged clamshells filled with delicious sea treats. "I think it's time for the cake," Finn said, nodding towards the magnificent jellyfish cake that glowed softly with bioluminescence.

Sharky swam closer, his eyes wide with delight. Tina and Finn stood by his side, eagerly waiting for him to make a wish. "Thank you, my friends. This is the best birthday ever," Sharky said, his voice thick with emotion. "Make a wish, Sharky!" Tina urged, her eyes sparkling with joy. Sharky closed his eyes, his mind filled with thoughts of friendship and happiness, then opened them to blow out the glowing candles on the cake.

Finn and Tina swam together, their previous differences forgotten in the joy of the moment. "I'm glad we could put our differences aside, Tina. Sharky's happiness is what matters most," Finn said sincerely. "I agree, Finn. Today has shown me how important friendship is," Tina replied, her heart full of warmth.

"Thank you all for making this day so special. I couldn't have asked for better friends," Sharky said, his voice filled with affection. Tina and Finn shared a knowing look, their bond stronger than ever as the ocean carried their laughter away on the evening tide.