Once lost to the deep, shipwrecks lying on the ocean floor are now accessible thanks to cutting-edge submersibles.Autonomous and remotely operated vehicles are capable of trawling the ocean floor at depths of up to 6,000 meters, to document ancient Ed Hardy clothing and recent shipwrecks, and recover key objects."RMS Titanic" is the most famous shipwreck to be visited by these vehicles. A recent expedition brought back images documenting the current state of the ship, nearly 100 years after it... more