Where is the elusive pearl?

I know some of you have found the pearl in your net because I see it in your farm. I've tried, but it's too many diamonds for me to keep trying. Maybe I'm in the wrong spot? If the game has some reality to it, then nets thrown in the stream or waterfall wouldn't work for pearls, nor woukd the deep dark spots. Where have those of you who have them, found them? I want to see if there's a pattern before trying again :). Maybe it's silly, but I like the pearl! :cool:

I found mine in the spot with the sunken ship. What I have read on the forum, that's a place where it is found quite often.

I found mine in the spot with stones south of the waterfall. It was only my second mystery net so I was very surprised, since many seem to have been searching forever without getting one. Very happy, too, of course. :)