Well, if he doesn't get it now, that's all the more reason for Ginko to try and teach him. Who knows how much new information about the ocean, about this whole new species and this individual member of it, could be gleaned if Ginko can figure out how to communicate more smoothly with him?

...Also, if he's going to be stuck out on the ocean for an unknown period of time, he'd like to be able to communicate more smoothly with the one other sapient being in the vicinity. Just, you know, a personal preference there.

Ginko is a little concerned about that choice of positions, seeing as how it... will probably end up meaning he'll have to flip Joker over and push him into the ocean again. But he can't really advise against it just yet. Speaking of communication. He just... gives him a faintly worried look before taking another bite of fish.

"Boat." He sweeps his hand down its side and onto the deck, then nods to the other side. "We're on a boat."