Dalamud in 1.22b

[Mushy]

Dalamud is obviously very small, so small, in fact, that it would have no gravitational effect on the planet by falling
Hell, even if the BIG moon fell, the only gravitational effect would be on the water (Because it is moving and therefore easier to be affected by the moons gravitational pull)
The biggest thing that would change if the "Big Moon" fell would be be that the planet would no longer orbit the barycenter. Since the planet doesn't appear to "Orbit" the moon, it is assumed that the barycenter is within the planet, meaning the planet's size is much larger than that of even the larger moon

Also, since there has been no change in the day/night cycle or the planet's rotation, then it is assumed that Dalamud is not large enough to have effected the Barycenter in any noticeable way and is therefore not large enough to cause any type of large-scale gravitational tidal anomolies

again i post http://finalfantasy.wikia.com/wiki/Dalamud

This change is said to be affecting sea currents, crops, and even the behaviour of monsters and their size.

IT EFFECTED THE MONSTER SIZE. in fact around that same time every monster doubled in size, explain that with your science!

(or was it just an excuse to why they scaled all the monsters models to huge)

[Rydin]

again i post http://finalfantasy.wikia.com/wiki/Dalamud

This change is said to be affecting sea currents, crops, and even the behaviour of monsters and their size.

IT EFFECTED THE MONSTER SIZE. in fact around that same time every monster doubled in size, explain that with your science!

(or was it just an excuse to why they scaled all the monsters models to huge)

In our world, there are 4 major Interactions (forces)
Gravitation, electromagnetism, strong interaction (The force that holds atoms together) and weak interaction (radioactive particle decay)
In our universe, gravitation is the weakest of the 4 forces...

In Eorzea, all of these are present, along with a possible 5th interaction... Aetherial Energy

So without testing (which would be impossible, mind you, being that we are referring to a 3D virtual construct) it is impossible to say these changes would have anything to do with gravitation.

In fact, there is no possible way any gravitational anomaly would result in any solid mass becoming larger in size

It is very likely that the Allagan tech that was used to send a man made structure into the sky, to possibly be used as a weapon would highly effected by (or completely made possible by) Aetherial forces

It is also likely that these terrestrial changes (sea currents, crops, and even the behaviour of monsters and their size) are a result of Aetherial interaction or at the very least, one of the three major interactions that is not gravitation.

In short... its not the gravity, it's the Aether

But at the end of the day, that is all pointless...
The real point is that the ancient man made moon is falling and that means big changes for Eorzea

also looking at past notes, where can I find this monster:

I want to say he was a familiar for the Archon in one of the company quests... also they are minions summoned by the boss inside the Kobold stronghold