Okay, I did a quick look up and nothing is listed for the ornate sea shell we are supposed to give him. I am just starting my cleric epic and trying to collect all the little items. Anyone able to tell me anything about the Sea Shell?
I completed this portion of the cleric epic quest with my 54 cleric solo.
I zoned to Firiona Vie from the PoK and headed to the docks. I waited about 15 minutes for the boat to arrive and jumped on. The boat took off and zoned to the Timerous Deep.
After zoning I was standing on a sandy beach on an island in the south west corner of the map. This is the island that has the ruins with Xiblin Fizzlebik, and the chessboard.
Since the location of the first underwater tunnel is at -11530, -3728, I started the long swim southeast. I got mauled by a Golra somewhere during the swim but it conned green to me and I nuked it. There is large circular island at the far south of the map and centered. The first underwater tunnel is just off the eastern point of this island. I dove down and the first tunnel took me back up to the interior of the island, where I was in some kind of enclosed sea with a mountain in the center.
The second underwater tunnel is at -11336, -1307, a short swim to the west. I dove down, went through the second tunnel and came up in an underground Oasis. There was a bridge leading up to an elevated hut in front of me. I crossed the bridge and Omat Vastsea was standing on the left side of the hut. I gave the Ornate Seas Shell to Omat and in return he handed me the Coral Statue of Tarew.