Altantis' location has been hypothesised in so many oceans and seas it's a wonder where they know where to look, if it even was a real place. Suggestions have been:
- The Mid-Atlantic Ridge, destroyed by the divergent tectonic plates
- The Black Sea, destroyed by the same flooding which inspired the myths of Gilgamesh and Noah.
- The Mediterranean Sea on one of the Islands of Greece, Italy or Turkey
- The Baltic Sea, built by Aryan "supermen" in Nazi mythology.
- Antarctica buried under miles of ice.
- Bermuda or the Bahamas (explaining the Bermuda Triangle phenomenon).
- The islands of Malaysia and Indonesia.
- A lost continent off India named Kumari Kandam.
- India itself, the sub-continent that smashed violently into Asia creating the Himalayas).
- The Yonaguni island formation in Japan.
However my favourite has to be the Alteran theory: that Atlantis was actually a city-ship built by a race of aliens who suffered a great plague so had to leave Earth. After re-seeding human life on Earth, they settled in the Pegasus Galaxy on a planet named Lantea where they encountered an energy sapping life-form. This led some of them to escape by ascending to a higher plane of existence, and some of them to travel back to Earth where they introduced civilisation to the humans they had created on their previous visit. Many of them lived among the humans for a long time before themselves ascending, passing on the myths and legends of Atlantis which eventually reached Plato.
p.s. Thanks Leolaia, I was thinking about the Witnesses a few hours ago, and I just rediscovered that the website hadn't all been shut down.