Underwater in Sunken Tower of Worus

Alright, the situation is the same as in Ships Graveyard, and the problem still exists like heck.
All the solutions are also similar to the ones for Ships Graveyard, except that this time, I didn't write any walkthrough,  and I
didn't find any map from RPGe.
But don't worry ... there are still walking Sequences provided by others:

     Walking sequence made by Snhes @ Seth's Page.
     The only problem is it doesn't lead to the air tank which grants you more time in the water.
     Walking sequence made by Ryan Leegate.
     Reads good, looks neater and easier to understand, but still doesn't have the airtank route.  But anyway!!

Entering the Phoenix Tower

The Phoenix Tower is located at the NorthEast part of world, inside a desert surrounded by mountains...
Ok, since this is tremendously easy, I will just do it in easy way:
 

•      To get into the desert - Ride Black Chocobo to land onto the forest near the desert!!
•      To get to the tower - WALK!!
•      To get upstairs in the tower - Check the Central pillar (wall) and a door will open.
•      When encountering a zigzagged central wall - check the "inward" parts. One of them has a monster while another   doesn't.

     Either way, you can get to the next floor.

Use the same algorithm to go further up... and you're there!

Passing The Forest in Cleft Of Dimensions

In the Cleft of Dimensions, you will pass the Mirage Town and see everyone frozen. After that, you get into a forest.
The outlet from the forest is at the down-right side (you know that from the way you enter it...) where you can see a tree
that has a hole on the stem.
Needless to say, just Check that tree from the front!! And a boss will show up right in front of you. :)
If you can't find that tree, try disable the tree leaves and look for the hidden passage if you're using Emulator. (In cartridge, a
nice circular area will be cleared up around you... guess that's not emulated either).