Just then Kyle realized he was still erect, and he wasn't certain Crystal's transformation had actually been the result of an orgasm either. There was more fun yet to be had. Kyle continued to weakly tread water while he looked around the pool for Crystal. He spotted her swimming and spinning like an underwater ballerina. She seemed enraptured by her new form and how she could move with it. She finally swam up to Kyle.
"This is so amazing! How can I ever thank you?" she asked.
"I think we were in the middle of something I'd really like to finish..." he replied.
"Oh!" she exclaimed then glancing down. "You're right! Let me take care of that..." she said, adding a mischievous grin before sinking back under the water.
Before Kyle could ask what Crystal meant by that he felt her mouth around his shaft. This was not a good way to keep afloat, but Crystal wrapped her arms around his legs to help hold him up while her mermaid tail rested on the bottom of the pool. Kyle tried to relax and float naturally as much as he possibly could while receiving an underwater blowjob. Crystal's gills removed any need to come up for air while she used her lips and tongue to maximum advantage. She kept him on the edge for awhile, but he could feel the end was near and tapped Crystal's shoulder to warn her. She paid no attention and kept going until Kyle climaxed, releasing him only when he went limp. She released him and let him float on the surface then pushed off the bottom with her tail.