MILWAUKEE (CBS 58) -- A new Facebook video is causing some speculation online.

A woman from Illinois was visiting Milwaukee Christmas weekend and says she saw something in Lake Michigan.

She tells CBS 58 the creature was two to three feet long and had fins sticking out of the water.

She told us it looked like a shark because of the fins.

What do you think it is? Leave us a comment on Facebook or Twitter and let us know.

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