Okami Wii: graphical problem underwater - with little spoiler...

I'm just playing that wonderful game...

I just arrived at the Dragon Palace.

Here I wrote what's the problem (check comments):

http://it.youtube.com/watch?v=1H1UMtTPnk8

I noticed black shadows (strange ones) going around the screen.. I can't understand if it's a problem of the gpu of my Wii or if it's a bad graphical effect due to the conversion from PS2

Someone of you could check that level or remember if these shadows occur always??

I watched many videos on youtube about the results of faulty Gpus and I absolutely don't have that kind of many little dots going mad around...

it could be simple a graphical effect of that game... and i noticed that exclusively in that area, not in others parts of Okami....

someone could help??

many many thanks to everyone!!!

Hmm... It never happened to me before.

Maybe...it's just a glitch or something.

Many many thanks to everyone replied!!!

You all helped me a lot!!!

At the end I think this was an intentional effect on Ps2, but with the "rice paper" filter it showed in a "light" version, barely noticeable... the Wii version looks this way because the filter is far less pronounced, and maybe Ready At Dawn didn't pay too much attention to this particular (maybe noticeable only in this location...), so Dragon Palace on Wii looks pretty weird....

PS:

I live in Italy so excuse me for my poor English...;)

hello everyone and thanks again:)