He surely did find her interesting, as did the rest of the merfolk with humans. His time for waiting soon came to an end, as the poor human girl began to cough. Being a merman however, he had limited movement on land, and being a man anyway, the last thing the poor girl would want is him fussing all over her, and speaking would only alarm her, which didn't mix well while coughing either.
Once she had recovered, well from the sounds of it anyway, her eyes then met his bright blue ones, "Hi there. Um...were you going to rape me?". Humans were indeed the most fascinating of creatures other than the merfolk themselves. They sure come out with some crazy stuff, and this one was even more odder than the rest by the clothing that she had upon her person.
"I would never do such a thing", he begun as he stressed the "never" part. Afterall, it wasn't in his nature, and why would she think such a thing for him, a merman, and the fact he was seated on a chair and not her. Though thinking about it, he was weary about the pirates and how they'd respond to her, "..nor do I allow it", he continued, passing over the image of authority, in hopes that she wouldn't be shaken so much.
"I apologise for startling you...because you see, I'm quite interested in humans, and so are the rest of my people. Please don't take it the wrong way", as he closed the lids on his bright blue eyes at a whim and breathing in, as the water chair lifted up with the legs now longer, so that she could see his bright blue tail, while hoping it would explain his actions.
"I'm sorry if I seem....fishy....to you", as his smile appeared from all the seriousness, hoping to liven the mood and crack a joke if he could, "But is there anything I can get you? A drink perhaps? for your throat?". His tone turned softer, as he waited to see if there was anything that he could do to settle her, before asking more about her.