A witness told FIVEAA radio the sea animal was the “size of a small cow … bigger than a sheep”. South Australia Police confirmed the driver of the vehicle was not injured in the incident ...

Call it ecological espionage. When complete in a few years, Mechanatee will propel through the water with its tail, just like a real sea cow, on covert missions of its handler's choosing.

This big underwater creature has a large flat tail. It's called a sea cow. It lives in the sea and eats sea grass. But it doesn't look much like a cow, does it? Sea cows are great swimmers.