Occasionally Isla was forced to live in the real world. Every day she woke up and ran straight to the ocean, every night she stumbled back home and collapsed into bed, greeting her father briefly on the way, and that was all the time she spent away from the water. She was known as weird and reclusive by the small town she lived in, but it suited her just fine. She had everything she needed.
But today was different. Today her father had guilted her into joining him on his fishing boat, as he barely got to see her and she felt that it was only fair to do something nice with him, considering he helped her maintain her carefree lifestyle. So there she found herself, relaxing on the boat with the radio playing, gazing into the water and wondering if Belle was missing her.
She didn't have to wait long. As she and her father chatted about nothing in particular, there was a little splash in the water near Isla's side of the boat, and she glanced down to see a dark green head peering out of the water. She sat up quickly and leaned over, eyes wide. "What are you doing here?" she whispered, barely audible over the radio. "My father will catch you!"
"I need you!" Belle pouted, tipping her head up to steal a quick kiss from Isla.
"I know you do, but I had to come on the boat today!"
Belle fluttered her eyelashes at the human, tipping back and floating on the water's surface. Isla was terrified that she wanted to be seen, but her eyes slid down the mermaid's beautiful body, and she realised what Belle was doing. The mermaid's prehensile cock wiggled above the water, and Belle gave her a pleading look.
Isla wanted to laugh, but she kept her cool. She reached down and wrapped her hand around the appendage, stroking it slowly as she adjusted her seat in the boat to look like she was just relaxing with her hand in the water. Belle pressed against the boat, as out of sight as she could make herself, thankfully moaning under the water so that she couldn't be heard. Isla's father still gazed out at the ocean on the opposite side of the boat, chatting about catching fish as the radio crooned between them.
Isla smirked as she sped up her hand around the mermaid's dick, the slippery member twisting in her grip as the mermaid tried not to writhe too hard in pleasure. It was not what she expected to be happening on her father's boat this morning, but it was fun to be doing something so secret under his nose. She jerked off the mermaid at a leisurely pace, nodding and humming in agreement with her father, until she felt a cold grip on her arm, attempting to make her go faster. Grinning, she moved her hand faster, and felt Belle's tail slap the boat as she shivered and came all over Isla's hand. Isla milked every last drop from her, before motioning for Belle to shoo.