That was I always figured the North Pacific islands were. The high ground of a flooded and subsided continent or something similar.Steve wrote:For underwater geography, we can do things like make Astaria an extension of a landmass, partly submerged, that includes the right-turned New Zealand islands. We could even add small islands between them as part of this land mass. (Kinda like the RL Zealandia mass, a partly-submerged mass that includes New Zealand and reaches up to New Caledonia).
Another similar landmass could exist, almost entirely submerged, in the North Pacific, where all those island chains (including Misteria) exist.
The Zealandia mass seems familiar. Didn't Marina use it for the Khaetjasti continent?