Jhen Mohran Ecology

Disclaimer: This is merely a plausible explanation for the monster(s) in this article, and should not be considered canon.

In-Game Information
Rare ore can be mined from these enormous dragons' backs; thus they are considered prosperity symbols. They are always surrounded by scavenging Delex, which sailors use to locate them.

Taxonomy
Jhen Mohran has been confirmed to be an Elder Dragon, simply due to its uniqueness. However, it does bear some resemblance to Leviathans (the fact that it can "swim" through sand).

Habitat Range
Jhen Mohran is found only in the Great Desert, where the sand is loose and fine enough for it to swim freely. It is possible that it could not live in any other environment.

Ecological Niche
Delex are said to eat the leftovers from Jhen Mohran. It can be assumed from this that Jhen Mohran is at least an omnivore, consuming a mass quantity of plants. This theory is supported by the fact that Jhen Mohran has flat teeth (a trait typical of herbivores). Jhen Mohran feeds very much like a baleen whale. It swallows large amounts of sand. The sand is filtered out and the insects and small animals left behind are swallowed whole and digested alive. Sometimes it ends up eating the Delex that are trying to scavenge off its leftovers.

Biological Adaptations
Jhen Mohran's main adaptation is its huge size, which makes it safe from any form of natural predation. It is also streamlined with immensely powerful limbs, which allows it to travel through the sand at great speeds. It also has a huge pair of tusks, possibly for use in fighting other Jhen Mohran.

Behavior
Jhen Mohran is a relatively calm creature, but has been known to retaliate against Desert Ships if attacked. It takes little notice of hunters climbing on its back, and will only occasionally try to fling them off. When walking slowly towards the motionless boat, it will largely ignore hunters attacking it, although it is aware of them, as it demonstrates when it uses its 'belly-flop' attack.