Strange underwater noises, known as “biotwang” sounds, have puzzled scientists since they were first heard near the Mariana Trench in 2014. These odd noises, described as a combination of low grumbling and high-pitched metallic ringing, are reminiscent of sounds from sci-fi movies. For years, the source of these noises was unknown, though they were suspected to be…Strange underwater noises, known as “biotwang” sounds, have puzzled scientists since they were first heard near the Mariana Trench in 2014. These odd noises, described as a combination of low grumbling and high-pitched metallic ringing, are reminiscent of sounds from sci-fi movies. For years, the source of these noises was unknown, though they were suspected to be…


