Headed to the beach? Keep a watchful eye on the ocean for sneaker waves. They’re sudden, far-reaching waves that are notorious for catching beachgoers off-guard. Videos of Californians being swept away have gone viral, including a recent incident in Santa Cruz where a lifeguard saved a 10-year old from drowning.

KQED’s Sarah Wright explains what sneaker waves are, why they’re dangerous, and how to stay safe while still enjoying the ocean.

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