PHOTOS: Beware of Jumping Sturgeon!

Huge jumping fish are colliding with boaters on the Florida's Suwannee River.

Sturgeon on the Suwannee River

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HARD SHELL: These prehistoric fish have their bones on the outside, giving them armor like a military tank. Chapman says that's why they've survived long since the dinosaurs became extinct. But the fish are now designated a threatened species because the Suwannee River is their last habitat. It's estimated there are between 5,000 and 7,000 Gulf sturgeon in the Suwannee. Yes, they are cousins of the famous Russian sturgeon that produces high-priced caviar. When the hard-boned exterior collides with boats -- and boaters -- it is easy to see how injuries happen. (Steve Orlando/University of Florida)
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