This was originally announced on our official Discord server.  In Koror's own words:

Happy Friday!

Basilisks and Shadow Beasts in the Zaulfung Swamp should now stalk separate areas. The murky Caverns are now split into two separate areas, with Basilisk in the south, and Shadow Beasts in the north. Spawn rates were slightly modified to adjust for the change, but we will monitor to make sure things appear in order. This should make the area easier to manage, particularly for Empaths!

Thanks to Grejuva for his QC and suggestions!

Not a member of our Discord yet?  Join up!  The server is moderated and is a great way to stay in touch with fellow players and staff alike!  Our latest updates are posted there.  Access is tied to your in-game account and is setup in-game via the DISCORD verb.  F2P accounts are welcome, though they can only post in certain channels.