ok to elaborate on what i meant about amano art..
i took the map of ulbuka and super-imposed it onto the concept art to see which land masses are there for a reason and which are just for decorative purposes..
www.wilddragonchase.com/ffxi/bg/ulbuka1.jpg
and from there marked out the area which is relevant to ulbuka itself..
following my theory its about the 7 warlords, i tried to identify them..
incidentally there are actually 8 monsters within that plain of land.. 6 of them (circled in blue) are distinct, but the last 2 are not so obvious (circled in green)
www.wilddragonchase.com/ffxi/bg/ulbuka2.jpg
edit: eh.. why don't my img tags work..
so.. going clockwise
#1 : bee (vermin)
#2 : shark (aquan)
#3 : bird (bird)
#4 : tree (plantoid)
#5 : polar bear / yeti (beast)
#6 : t-rex (looks like its upside down) (lizard)
and one of the 2 green circled ones is probably supposed to represent amorph.