I was salmon fishing in SW MI sitting under a bridge casting down into a hole on the end back in the early 90s. You could see the salmon against the sand bottom when they would leave and head upstream. A very large weird shape came up on the sand bar and just stayed next to one of the pylons. I had no idea what the heck it was until years later when I learned about Sturgeon. I have fished that spot a lot and never seen another one, nor has anyone that I have talked to. These are normally only found in lakes in Northern MI or in creeks that they spawn in after they leave the big lake. It was a neat experience now that I know what I saw, probably a once in a lifetime experience.
Cool pics, maybe someday I can be fortunate enough to catch one.