Tou-Tou Moarsman Fort
Guard Taizo (28.0S 95.5E in Tou-Tou) tells of a moarsman fort just on the beach located at 28.9S 92.6E. The fort is filled with Tainted Rank Moarsmen.
Killing all the Moarsmen in the fort causes a few Coral Encrusted Chests to spawn at the top of the Temple. They contain a Small Tainted Egg, use of the chest is on a 6 day timer.
The chests disappear when the Moarsmen respawn after a couple minutes.