Bell recovered from WWII sub

A bronze bell has been recovered from a Japanese submarine that was sunk intentionally off the Hawaiian Islands by U.S. forces 70 years ago. Researchers from the Hawai'i Undersea Research Laboratory (HURL) in two submersibles, Pisces IV and Pisces V, used a robotic arm to retrieve the bell that was resting on the seafloor. The bell was from the I-400 - a World War II-era Imperial Japanese Navy mega-submarine, lost since 1946. Longer than a football field at 400 feet, the I-400 was known as a "Sen-Toku" class submarine - the largest submarine ever built until the introduction of nuclear-powered subs in the 1960s. "It was an exciting day for the submersible operations crews of Pisces IV and Pisces V," Terry Kerby, HURL operations director and chief submarine pilot, said in a statement.