ソナーの専門家「壁を叩くような音が聞こえる？それ人間やなくて朽ちたタイタニック号の残骸から出てる音やね」


EXCLUSIVE: Sonar expert says underwater 'banging' heard by Coast Guard at sub search site is 'debris falling from the decaying wreck' - and proof of life of Titanic Five is 'wishful thinking' 
https://www.dailymail.co.uk/news/article-12220611/Sonar-expert-says-banging-heard-sub-search-site-debris-falling-decaying-wreck.html