Freediver Carlos Coste Sets New World Record, Swims 150m Through Underwater Cave

That's almost 500 feet -- a stunning feat. Or should we say... breathtaking.

Carlos Coste has created a new Guinness world record for freediving, after swimming 150 metres through a cave using no apparatus.

The Venezuelan was armed with only a torch and a monofin - a single giant flipper worn on both feet - when he made the death-defying dive on Wednesday.

The 34-year-old soared through a passage inside Dos Ojos, a colossal cave network that twists for 31 miles under Yucatan, Mexico.

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