Daia's face brightens back up as he nods and tackles back to the sand.

"Yea! You're right!"

And thus he begins building again with a new level of vigor.

In the middle of it, though, he tilts his head in thought.

"Hey, have you always been able to do that? Turn into a whale?"

Like, the train was probably too small and crowded for that kind of thing anyway. So he gets the why not, but wonders if that was something she learned later.