He tries to make his way to a temple, that is where they keep their healers in this world, right?

He can find a temple!

A very concerned priest approaches him.

"Areus, what happened?"

Areus cannot recognize whether this is the same member of the species that translated for him, as they have not spoken much since the initial days, when he served as primary translator.

Areus coughs. "Bad" More coughing "water."

Fair enough. Healing injuries is simple.

That doesn't seem to fix it. Healing diseases?

That does.

Areus gasps, but regains his composure. "Ow, that was probably a bad idea." He says to himself. He takes another deep breath. "Thank you," Areus says in Aquan

"You're welcome! What was all that coughing for? It seems you had been infested by something."

"I was swimming. Found... orange water."

"Oh dear...the poison water? Yes, that has been a problem. It contains some kind of small beasts who infest the lungs and kill us."

Areus makes the universal sound of this is terrible, which happens to be "Blergh." Then after another deep breath he regains his composure. "Thanks again." He kinda wants to figure out how to kill the things to avenge his pride.

If there's nothing else, he will shuffle off!

Areus sighs and goes about pretending his pride didn't get injured.

He figures he can visit the temple and talk plans about housing the refugees.

They can absolutely talk about that!

Osudyn will excitedly discuss the conversations within the city about sending an expedition to help refugees settle outside of the City of Glass. They'll need to avoid some of Water's hazards, of course, especially the local ones which have not yet been contained or eliminated, but she trusts that they can handle it with enough goodwill and determination.

That sounds great! It can be quite scary, but all things considered it's good that they have people willing to help. Better than expected.

Speaking of hazards, what is up with the dangerous colorful water near the city?

Oh, yes. The red tide. Osudyn has campaigned within the City to try to resolve the issue, but most people are reluctant to move because of how many people it has killed who are unable to receive healing quickly enough.

There are more patches like it, further away, but this who is dangerously close while still being potentially out of reach of the City of Glass for most people.

She would dearly like to destroy it, but the refugees should probably take precedence over that, she thinks, since the problem seems so urgent.

It definitely does, but it might be the sort of thing the refugees can help with. Some refugees can purify, and it might work or reduce the risk.

She wouldn't say no. So far, they don't know much about how they form, yet they pose such a serious threat. They are difficult to make out up close; it is only observation from a distance and the use of magic to guide visiting swimmers that has protected people from it. Any help they could get with this problem would be much appreciated.

Yeah, it looks like a similar thing that happens in Actana. He recognizes it now that he saw it up close. They can't completely get rid of it, but can make it less dangerous. Purify the poison in it, but not the poison-making things in it.

...that would be incredibly appreciated!

Osduyn is also interested in hearing about the poison-making things in it, though, that seems like it might be important.

Someone else might know better. But he knows water just has stuff like that. It's alive and the purification power isn't effective to kill things unless they are inside and hurting another living thing like some parasites do. So you can purify the water, but not stop the things from coming back. Still better than nothing. 

There are a lot of people who will want to know that the patch is caused by living things, she thinks. Osudyn thanks him for sharing that. They'll have a discussion soon about whether purifying the water is a good idea and then they'll let someone (made someone else, who might know better?) among the Actanan refugees know.

There is definitely someone who ought to know better than him. He only knows this from a second hand account. One of his half-sisters has the relevant power and might know, but she never had been to the sea.

She can't wait to meet more people from his world! It'll be good to get them away from their apocalypse and here to Water, where things are at least stable. Osudyn asks him a few questions about this half-sister (so that it'll go more smoothly when she meets her, mainly), and lets him go before he gets too restless.

Phaidra is Good, alignment-wise. Too innocent and naive, but very kind and good. Half-giant and half-serpent like himself, and also looks like giant. Easy to get along with. Phaidra's younger sister, Megaera might cause problems? Megaera is Good too, but defensive and not naive. Megaera can heal people.

Osudyn privately thinks that she'll get along better with Megaera, but she shouldn't jump to any conclusions.

She says that it would be lovely to meet both of his sisters! And eventually, they part ways.