The dimensions of the thresher you mention are mind-boggling.  Even the eldest of the threshers in this region grow to only a fraction of that size.  While some larger ones were known to be close to Teldrassil, their numbers have declined steadily.  I cannot help but wonder if these creatures beaching themselves here are somehow related to this.$B$BWhile we analyze the bones you have brought us, please accept this on behalf of the Temple of the Moon.  Thank you, $N.