Mysditional cache: "Full Fathom Five" Mystery Cache

Full fathom five thy father lies;
Of his bones are coral made;
Those are pearls that were his eyes;
Nothing of him that doth fade,
But doth suffer a sea-change
Into something rich and strange.

Mysditional:

Quite contrarious to most caches of the type "unknown" (or also called "mystery") this mysditional cache is located more or less at the coordinates as listed above on this page. However, simply following the arrow on your GPS to this coordinates will definitely not lead you to the cache, you'll probably only upset a local farmer by walking on his fruitful land, so don't even think of trying it this way. It's no traditional cache in the ordinary sense of the word, hence the name "mysditional".

In fact, circumstances near the cache are that strange that it will be most likely you will not be able to follow the arrow since it will be swallowed by some kind of Bermuda Triangle.
To find the cache you must use the treasuremap to locate the wormhole that connects the field to the underworld. Make a print and take it with you while treasure-hunting. You will need it.

Reading the map

The Bermuda Wormhole can be found with help of the treasuremap and some seaman’s knowledge.
Found it? Then take a last deep breath of air and enter the wormhole. Go through the gateway and swim left-left to locate the iron porthole lying on the seabed of the adjacent diving lane.
From the iron porthole start swimming SE to the nearest oxygen bubble (don’t change diving lane) located at the light (once behind bars). This may take up to 15 minutes. At this point you can grasp a bit of new fresh air.
With your oxygen tanks refilled, make a 180-turn and go left-left to locate thy father's ship at a distance of about 0.01 nautical mile.
See how the coral has taken over the ship.
Examined it all? Then say a last prayer at the altar and swim about 16 shackles NW (as a seaman of course you know all about the shackle, don't you?).
After these 16 shackles, measure the temperature at the large junction and dive less than one fathom for the missing part of Ariel's song.
One last plunge and the treasure will be yours...
After logging, please hide the cache exactly as you found it.
Don't forget to take your diving gear (see attributes) !

Your online log

Enthousiastic stories are very welcome, but please no explicit hints/spoilers how and where you found the cache and please no pictures at all in your logs.
After all, it should remain a mysditional ;-)

Logs are welcome in either english, français, deutsch or nederlands.
Happy hunting and have fun!
Greetz, Bloodwoosj.