They swam together, through the glittering reefs, as the sunlight filtered through the water made the coral sparkle. It was even more beautiful than he remembered, and the Doctor was glad he had brought Donna here.

A school of fish burst out of a hidden cave and surrounded them, their scales shining in the sunlight as they swam close enough to brush against them. Donna grabbed his hand, squeezing hard, and he was relieved when he realized it was from excitement and not from fear. She moved gracefully through the water and he was happy to follow her, letting her decide where they should explore, enjoying her discovery of the wonders of the place.

Their guide finally signaled them to return to the boat, and he climbed in first, then turned to give her his hand to help her up. His hand lingered a little in hers as he pulled her into the boat to stand next to him, a little too close. He caught his breath as he resisted the impulse to just lean in, brush her lips with his, taste the salt water on her skin. But then she stepped away, eyes sparkling as she pulled off the bathing cap and shook out her hair, and he followed her to sit on one of the benches as the boat returned them to the shore.

He watched her, her legs stretched out before her, water still glistening on her skin, as she chattered about what they had seen.

"I mean, when you said 'diamond coral reefs' I thought you were having me on, but then - Diamond. Coral. Reefs!" she said, her hands emphasizing her words, all that enthusiasm bubbling under the surface. He loved when she was like this - so excited about whatever they had just seen. And he had to admit he was pleased he was able to show her the wonders of the universe, make her heart beat a little faster, bring that sparkle to her eyes. She reached out to touch his arm, to emphasize a point, and he felt her touch like fire on his skin. He tried to focus on what she was saying, only just managing to make the appropriate noises to make her think he was listening as she recounted all they had seen. He was really thinking how he'd like to slide his hand up her leg, find out if she was ticklish behind her knee, feel the satin of the skin along her collarbone with his lips.

"Doctor," she said, and he could tell by her tone that this was not the first time she had said his name.

"Yes?"

"I said, are you hungry? Shall we try that little restaurant we saw at the dock?"

"Yes, yes, that sounds good," he said.

"Are you alright?"

"Fine, fine, just thinking," he said. Thinking of your skin, your touch, your taste.

"Oh," she said. "So, lunch, then a bit of sunbathing?"

"Sounds perfect," he said, wondering how long he could resist her pull, stay afloat. Thinking it might not be so bad to let her pull him under.