A question on Atlantis

[The Panther]

Vynd said:

I thought that she was supposed to regen 90% of her hit points underwater, not all of them.

It is not a percent. It is a fixed amount. And only one of the queens regenerates 50 HP per turn. The lesser aquatic queen regenerates 39 while the amphibious queen regenerates 28. Being underwater or not makes no difference.

The description in the troop does say:
"Unless she is completely killed during one combat round, she will heal all wounds."
This is bogus, of course. But don't always believe those descriptions. You have to click on the ability of the troop to see reality.