A new device invented by a surfer might repel shark attacks

Sharks attacked more than half a dozen surfers in North and South Carolina within three weeks this summer - more than all of last year's attacks in those states combined.

The Carolinas weren't alone. A string of shark attacks have left some of Australia's most famous and popular surfing beaches deserted, according to Reuters.

Experts say it's because this summer brewed the perfect storm for shark attacks: warmer ocean water, which attracts more sharks to shore, and more people than ever heading to beaches for a swim.

The solution is not to kill off more sharks - humans already slay 100 million a year just for their fins. That industry is already having catastrophic effects on delicate ocean ecosystems, and there's no reason to exacerbate the problem.

A more humane idea is to repel sharks. That's why scientists are developing a $390 device surfers can embed in their boards to allegedly overpower the predators' delicate, electricity-sensing hunting organs.

Keep scrolling to see these high-tech surf boards and how they're supposed to work.