Damn Nature, U Startling of the Day

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Shark Week continues with this unsettling video captured by diver Jim Abernethy. Abernethy was filming blue a marlin when a ten-foot Mako shark darted into the frame. Naturally, Abernethy launched into an expletive-laden freakout (who wouldn't?) at the sight of the 600-pound beast. Fortunately he survived to tell the tale.