HUGE FIND (at least, i think)
There are other ways you can do that, without using the swimming glitch. Greenalink has done it a long time ago.
But that method was new to me at least, if I'm not having a bad memory.
Ok... Do like I haven't said anything ...I found this three years ago, but never talk of this:
http://www.youtube.com/watch?v=XcpL-NmN3UwFollow the direction in my vid, and you'll get a "weird/corrupt" game file (999death count and a dark Link with the red shield)
The entire game is modified. I found a lot of things like you can get in a mid-world (beetween dark and light). There's so much to discover here!
(finally not so much)