It's every pilot's worst nightmare, yet most flight schools spend only two days on the topic: flying sharks. The pilot of a passenger jet flying into Christchurch, New Zealand spotted a flying shark Air Swimmer toy moving through the air. At least, we're assuming -- perhaps unreasonably -- that it was just a toy. Anyway, the pilot radioed into local air traffic controllers to alert them:

The fish out of water was identified as a remote-controlled, helium-filled shark that has topped must-have present lists this Christmas.

The 1.44-metre-long Air Swimmer toy has a radio receiver attached to its underside and can be operated by remote control over a range of 15m.
Designer-developer William Mark Corporation warns that the shark is for "strictly indoor use only".

A spokeswoman for air traffic control company Airways, Monica Davis, said a pilot had reported the shark and its location about nine kilometres from the airport at 2pm on December 26.

Link -via Dave Barry