A video featuring dozens of Asian carp jumping out of a river and bombarding a boat in the US, has become an online hit, unsurprisingly.
The 70-second clip shows a family travelling down the Spoon River in Illinois which is heavily populated by Asian carp. As they soon find out.
That's because -- as anyone who has ever been on YouTube will know -- Asian carp have a fear of boats, and are blessed with an amazing jumping ability.
So when a boat passes over them, the 5-10lb fish leap up to two metres from the water en mass. Something you can see for yourself if you just click play.