Deep water? [Rin could understand that. His twin brother was pretty afraid of most things. Especially the deep side of the pool, but it was different in a big ocean. Down, thousands of leagues under the surface, the sea floor seemed so far. Not to mention the other creatures under those waves.]
I get that. The ocean's so big,thinking about it does seem scary. [So let's not think too hard about it.] But you've rode a steamboat? Aren't those super slow?