Hi Stoo,
Looks like the Arabia shipwreck in Toby, to me. Nice Shot.
I too, am waiting to see my first Bull Shark in the Great Lakes. I hear they can conserve thier salt intake and manage fresh water for quite some time.
Anyway, I would image sharks in Lake Huron would be old news as they would have to come through Lakes Ontario and Erie first, assuming thier entry by the St. Lawrence River.
Interestingly enough, we do have jellyfish though. Here is a photograph of
Craspedacusta sowerbyi Lankseter, a jellyfish that was introduced to the Great Lakes through aquatic plants from the Yangtze River in China by the aquarium trade. They only grow to about the size of a "toonie" (25-50mm) if you include the tentacles.
I got the image diving the Old Welland Canal here in Niagara. First thoughts i had when swimming through a large group of them were, "I wonder if these are poisonous?". Obviously not, but something to consider when meeting any introduced species anywhere.
Paul Walker.
Nikon D2x, D7000, Aquatica D2x, AD7000, SunStrobe 200 x2, Inon Z240 x2, TLC Arms