Phineas smiled at his partner's enthusiasm, turning to look out over the turquoise waves. The water was pleasantly warm, but that didn't do much to ease the chronic discomfort felt when easing into deep water. Trailing the rubber coil behind him, he walked across the glittering white sand until the water was past his waist, then turned back to shore.
"There's a short drop off into a reef!" he called back, his voice steady. "I'm going to see if I can get a look!" He turned back to the water. Small fish were flitting through the water around his legs, and before him the sandy beach fell away into a colorful marine habitat. 
"I hate swimming." he muttered, and dove underwater.
The saltwater stung at his eyes as he opened them, but he forcefully held them ajar until he could make out the objects around him. Swimming slowly in the clear water, he was able to make out tall coral structures brimming with vibrant sea life. He continued, his breath holding out well, until he made out the bronze sheen of the hovercraft, some twenty feet below him, and a small oil column drifting out of hit. He lunged upward and clawed at the air, gulping and drinking the cool ocean breeze until he was breathing at a normal rate. He turned to the shore and found that he was nearly a hundred yards out. Kicking at the water below him, he waved his hands and called out to Eliza, who's form he could still make out on the beach. 
"I've got it!" he yelled. "Get ready with the tubing!"