I´ll repost the information I gave back then about this age:

“It seems to have been some kind of submarine science station erected by the old D’ni. It is some kind of pod – but a different one than those we know from “Reziksehv” – with some observation cupolas. The marine life in this age is very different from what we know – there are no fish, but some strange, ribbonlike animals, which are slowly moving through the water.
The temperature seems to be quite hot – the pod is heavily insulated, but there are D’ni scales that show temperatures about 176° Fahrenheit (80° Celsius).
How these creatures can survive this hellish environment, is one of the goals of our research there.
Our interns have dubbed them “Hadesfish”, after the greek underworld.”

Now, some years later, we know the name of the age, because we found some books of commentary about it.

Its writer, a D’ni named Furash, who was well known for having an unique and strange style of writing ages, called it “Pohiresh”.

It wasn´t open to the general public back when D’ni thrived, but only to a few selected guildsmen who did extensive research on the strange creatures of this ages ocean.

These studies have proven very useful for us and helped us understand some of the strange characteristics of the “Hadesfish” and other creatures which are similarily adapted to this hot biotope.

We even managed to bring some of these creatures to Afelahn, where we put them in one of the aquariums we installed some months ago.

The aquarium is constantly kept on 81 ° Celsius and refilled regularly with water from the Pohiresh ocean.

Unfortunately, we couldn´t transfer Hadesfish from the age alive – they died within minutes when put into transport vessels.
But we managed to catch some of the strange, red creatures we call “Red orbs”, which are round with an abrasive, scaly shell. They float around in the oceans, pushed by the currents, and tend to stick together to form huge colonies, literally being adhered to each another.
The D’ni didn´t leave a lot of information about these strange animals, and so they are a target of momentarily intense research by our expedition teams.