第二次世界大战期间,美国巡洋舰连连被炸沉。水下听音设备反映:只有海洋动物发出的噪声,从没听到鱼雷发射声。后来抓到一个日本敢死队员,真相才揭开。原来早在战争前,日本就录下了美国海湾动物发声资料,后模仿这种发声,制造了鱼雷发动机。战后,美国积极从事“水下动物部队”的建设。早在六十年代,美国海军就有海豚部队。1974年起,美国海军开始把海豚训练成“海军武器系统”。他们利用它找回沉在100米海底8厘米直径的失落物,利用它发现导弹发射合和潜艇,让它携带二氧化碳的针刺插入 During the Second World War, the U.S. cruiser was repeatedly sank. Underwater listening equipment reflects: only the noise emitted by marine animals, never heard the torpedo fired. Then caught a Japanese death squads, the truth was revealed. As early as the war before the war, Japan recorded the sound of the United States Gulf animal sound, after imitating this sound, creating a torpedo engine. After the war, the United States actively engaged in the construction of “underwater animal forces.” As early as the sixties, the U.S. Navy has dolphin forces. Since 1974, the U.S. Navy has begun to train dolphins as “naval weapon systems.” They use it to recover the lost object that sank 8 centimeters in diameter on the seabed of 100 meters, using it to find the missile launch and submarine, let it carry the carbon dioxide needle penetration