The Eltheric Ocean — Ocean holes

Based on the Daggerfall Map Unity mod There’s a Hole in the Bottom of the Ocean.

• Each pit leads to a flooded Daggerfall Map dungeon with its lights removed and a new name. About 30% of its enemies are aquatic, and fire creatures are gone.
• Loot is one material step better, with extra magic items.
• Recall works there, and leaving returns you to the pit.