USCG: sub debris found after “catastrophic implosion”

All five passengers on the missing Titanic submersible are believed dead after missing debris is found on the ocean floor turning operations from rescue to recovery. In the wake of this tragedy, CNN is going to examine deep sea exploration and the inherent dangers that come along with these expeditions.  To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices