Starseeker Leviathan

"Unrelated to The Leviathan, the mysterious and horrifying monster of the deep, the Starseeker is something... similar in shape but different in nature entirely. It is no secret that it is named after that water-bound beast... but this creature moves about the emptiness of space as if it was a sea all its own..."

— Scholar Maiah Regraul, Liberty 25

The reality of the Star Elementals is lost to the average person, only known by a select and secretive few. After the disaster of The Battle of Unspoken Grief, all Ëstmentari retreated from the world and took up residence amongst the moons, and everyone slowly forgot about them.
Despite how empty and lifeless these moons seem from the surface of Eldûra, the Ëstmentari have made a home out of it and have done their best to make it resemble the land and flora they had enjoyed so much before they left.
This is why the sight of the 'star serpent'—or "Starseeker Leviathan" as it is known more prominently—does not concern the Ëstmentari.
But that doesn't stop those in the know from being a little wary of it.
The nature of the Starseeker is hard to determine when the only way one can percieve it is through the lense of the telescope, since it is usually so far away. But being that far away could be considered a good thing when it comes to the nature of star elementals.
When it comes to who claims to radiate the hottest heat, Tol-Aughú, King of the Húmentari often boasts about holding that title. But in truth, his and his kind's fiery heat is surpassed by lightyears by the celestial flames of the Ëstmentari. Thus, it would be too dangerous to get too close to a creature such the Starseeker, and if were to descend onto the surface of the planet, the atmosphere would ignite.
Whilst the Ëstmentari could control how much heat they radiated, the Starseeker cannot—or won't.

The Starseeker's Place in the Stellar Ecosystem

This strange and elusive draconic beast is intelligent, and was once one of the Ëstmentari. No one really knows what he did or why he now wanders amongst the moons in the shape of a leviathan or stellar sea serpent. No Ëstmentari have deigned it necessary to tell anyone about his history or what his attitude towards others are.
The Steward has grown quite concerned about the Starseeker—but despite being one of the closest Eldûrans to the Ëstmentari, they have remained silent about the beast, much to the Steward's chagrin.
There is no other way to really know how the Starseeker interacts with his environment or his fellow Ëstmentari except to get that information from the Star Elementals themselves. But they won't tell anyone anything.