These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fridge Brilliance: So where did they go after the island exploded and they're stranded in the middle of the ocean in a tiny rowboat? One could be forgiven if one had forgotten Acquanetta's little throwaway reference to a missionary school, "island over there!" which is apparently close enough for the Lost Continent natives to journey over and not quite learn English.
One could also be forgiven for forgetting a brief mention of high-pressure, underground gasses, as well as an even more brief mention of earthquakes, both of which ultimately lead (we'd have to assume) to the Cataclysm Climax.