We did some digging and iNat was using the locale of one’s browser to localize maps. We made an update that now uses your account locale (the one you can choose in Account Settings or at the locale picker in the footer) for map localization and I think do see some changes. If I chooseEspañol (Mexico) I see this:
If I choose English (UK) I see this:
The other languages I’ve tried, English, French, German, Español and Japanese only show Gulf of America.
I’m going to close this topic for a few days. People are still making off-topic posts that are not constructive, and I think it would be prudent to see what things are like in a few days once Google’s updates are fully rolled out and we have some time to do a little more digging about a potential global map default.