"A world... between worlds. An alternate dimension? That shouldn't be possible. Travel between dimensions isn't possible. Not anymore. At least it shouldn't be. No. Shouldn't be. Nautilus, you say? Interesting choice. A submarine and a cephalopod and a world... apparently."

As his rambling winds down, he grinned at the boy as if just noticing he was there, "Hello Link. I'm the Doctor."