Final Fantasy 5 pros only(SNES) request help!?

Question

http://www.angelfire.com/me/ffvillage/5walk.html
for those who completed the game, the walkthrough says that:
13. The Great Deep (Party's level: 36)
How to get to the great deep? i do'nt know where to find it
thanks

Answer 1

I think it's talking about the sunken tower of Waltz in the third world. You need to go to the inner south sea of the Phoenix tower desert. The tower's down there, just swim up to it to get there.

This is were you get the missing crystal shard (and it's mimic ability) by beating Gogo (just block the entire fight)