Daredevil ... Adventurer Dean Potter slack lining walking across nylon rope from Lost Arrow spire in Yosemite National Park, 915m above the ground, in 2005. Source: News Limited

A Yosemite National Park spokesman says Potter and Graham Hunt died on Saturday after attempting a wingsuit flight from a 2300 metre promontory called Taft Point.

A search-and-rescue mission began overnight when the jumpers’ spotter lost contact with them.

Crews found their bodies on Sunday in the Yosemite Valley. No parachutes had been deployed.

High wire stunt ... Dean Potter slack lining walking from Lost Arrow spire in Yosemite National Park, 915m above the ground, in 2005. Source: News Limited

Potter, 43, is renowned for his bold and sometimes rogue climbs and BASE jumps, in which he would parachute from a fixed structure or cliff.

He completed solo ascents and tightrope walks across some of the world’s most famous rocks.

Survivors of the accident include Potter’s girlfriend Jennifer Rapp and his dog, Whisper, a blue heeler who has played a prominent role in Potter’s adventure life for the past few years.

Last year Potter and Rapp produced a film called When Dogs Fly that chronicled Potter’s adventures BASE jumping with Whisper.

Rock Climber Dean Potter has introduced his dog, Whisper, to the thrills of BASE jumping. The full-length documentary 'When Dogs Fly' is coming soon. Courtesy Dean Potter

The eventual footage of Whisper, wearing goggles and cinched between Potter’s back and his parachute pack, became an online sensation.

Potter is renowned for his bold and sometimes rogue climbs and BASE jumps, in which he would parachute from a fixed structure or cliff. BASE jumping is illegal in Yosemite.

Potter was 43. He completed solo ascents and tightrope walks across some of the world’s most famous rocks.

Man’s best friend ... Dean Potter and his dog, Whisper. Source: YouTube