Hello again fellow chest runners,
I decided to post another zone I enjoy running in. I like Gyala Hatchery (explorable) for a couple reasons. It has a very good variation of foes, and therefore a good variation of chest loot. It is also relatively easy to run in in both NM and HM, except the 'maze' on the east side which the map ignores, due to there usually being a somewhat clear path between patrols. The most annoying part about the zone is disenchants and stance removal, mostly by the Creeping Carp. The Outcast in the zone are not too bad however their warriors carry a group IMS, the elite skill "Charge!", so they tend to chase you for a while.
On the map I color coded most chest locations as to what items other than plain Jade Sea drops they can have. In the fishy and Outcast areas where there is quite a large # of possible locations so I didn't mark them. I probably missed a few possible Naga chest spots as well. Also, since the Outcast and fishy patrols overlap it is sometimes hard to tell which group the chest is 'bound' to. The same is true along where fish overlap Naga and also the 3 northernmost Oni chests with nearby Naga groups.
Orange = Outcast
Aqua = Fish / Leviathans
Blue = Naga
Hot Pink = Oni
Lime = Plain Jade Sea only
The aqua area that is highlighted contains the highest concentration of fish and therefore the best chance for Jellyfish Wands in the zone, most of the Creeping Carp are there. The rest of the aqua areas mostly contain Leviathans which don't drop Jellyfish Wands, there are a few Irukandji and Scuttle Fish so it is still possible to get one. Outcast chests have the possibility of Outcast Staves/Shields. Naga chests have a chance of Naga Bows. Honestly, there is too much to list as nearly every possible Jade Sea drop can drop somewhere in Gyala, with the exclusion of Deep only drops.
(BTW, I'm partially colorblind in case you can't tell by my color choices lol)