Photo: Divers Break Record for Longest Cave Passage

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Diver Jarred Jablonski swims through the cavern entrance to Florida's Wakulla Springs, one of the world's largest and deepest freshwater springs, in this undated photo.

Jablonski and diver Casey McKinlay shattered world records for underwater cave diving in Wakulla, swimming the longest dive between two entrances on December 15 and 16, 2007.

The expedition also showed that two cave systems in northern Florida's vast underground network are connected, which will help scientists understand how the aquifer works.

Photograph courtesy David Rhea

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