Johnny knew he couldn't pass up an opportunity to try out his new feet in the sea.
So he and Ryan went to the dock where his boat was, then, they went below deck, and changed into their swim shorts.
then, when they was back on deck, they jumped into the water.
Johnny and Ryan swam in the safe area around their island home.
Johnny swam quite quickly in the water. and when he went underwater, he didn't even come up for air! Ryan was amazed.
Johnny swam right down to the surface of the sea near his island. then he swam round and round his island underwater 15 times more.
"I didn't know you could swim that fast, Dad!" Ryan said. "I sure wish I could swim as great as you."
Johnny grinned. "You're right, Ryan. I didn't know I could swim so fast. and I didn't even come up for air the whole time!"