Beyond just a floating landmass. Sirion was also the smallest continent, larger than Niton by little.
That didn't mean it could be looked down upon. Even expanding his senses to maximum, Zydrax couldn't encompass it all.
Nevertheless, just surveying one third of it was enough. It gave him a better understanding of the ecosystem here.
Its inhabitants were known as Ice men, bipedal creatures closer to fish than man, with webbed hands and feet, scales looking like processed aluminium, gills in groups of three just above their elbows and on both sides of their necks, slanting, no one, not even him-Zydrax-could decipher anything of their origins beyond the the fact that they came from fish.
And honestly, most couldn't care less. They were already here anyways, knowing where they came from wouldn't change anything.
These creatures had grown to withstand the extreme cold of these parts and developed themselves, creating a unique ecosystem.