What is up with the F-35's wingtip vortices?

I have next to no knowledge in the field of aerodynamics- I stumble to explain the two competing theories of how a wing works, how coupled and uncoupled canard-deltas differ – even the simple equations of Energy Management have me stumped (not even sure this last one solely exists in aerodynamics). So I’m hoping that some bright aerodynamic engineer can help me with this one – ideally using simple language. Why does the F-35 produce such distinctive vortices from the wingtip/flap edge – and are they intentional, and positive in effect? Agile fighters – with strakes or canards – display visible vortices on the inner section of the wing- presumably where it’s wanted. I thought that wingtip vortices caused induced drag and were best avoided? Yet, the F-35 seems to stream them like a ’70s airliner. Educated comments in the reply section are VERY welcome. 

You may also enjoy 11 Cancelled French aircraft or the 10 worst British military aircraft, Su-35 versus Typhoon, 10 Best fighters of World War II , Su-35 versus Typhoon, top WVR and BVR fighters of today, an interview with a Super Hornet pilot and a Pacifist’s Guide to Warplanes. Flying and fighting in the Tornado. Was the Spitfire overrated? Want something more bizarre? Try Sigmund Freud’s Guide to Spyplanes. The Top Ten fictional aircraft is a fascinating read, as is The Strange Story and The Planet Satellite. The Fashion Versus Aircraft Camo is also a real cracker. Those interested in the Cold Way should read A pilot’s guide to flying and fighting in the Lightning. Those feeling less belligerent may enjoy A pilot’s farewell to the Airbus A340. Looking for something more humorous? Have a look at this F-35 satire and ‘Werner Herzog’s Guide to pusher bi-planes or the Ten most boring aircraft. In the mood for something more offensive? Try the NSFW 10 best looking American airplanes, or the same but for Canadians. 10 great aircraft stymied by the US. 

 Edward Ward’s world of mechanical whimsy and tomfoolery can be enjoyed here.

You may also enjoy top WVR and BVR fighters of today, an interview with a Super Hornet pilot and a Pacifist’s Guide to Warplanes. Want something more bizarre? The Top Ten fictional aircraft is a fascinating read, as is The Strange Story of The Planet Satellite. Fashion Versus Aircraft Camo is also a real cracker.