The South Pacific is that part of the Pacific south of the equator - see here, so including questions about Hawaii, which is well into the North Pacific, seems a bit odd. Maybe having written the quiz from mainland USA, Hawaii feels "south" even if it's still quite northerly in the world! Still, maybe the North Pacific deserves its own quiz...
Well, technically true, simple google search's point out that the "Hawaiian Islands have often been considered to be part of the South Sea Islands because of their relative proximity to the southern Pacific islands, even though they are in fact located in the North Pacific" and that the "term South Sea may also be used synonymously for Oceania, or even more narrowly for Polynesia or the Polynesian Triangle, an area bounded by the Hawaiian Islands, New Zealand and Easter Island." I think a case can be made for using the term "South Seas" culturally and historically as well as strictly geographically.
There's a hyphen in Moby-Dick.
Good quiz :)