Theories about the sound's origins included an undiscovered sea creature. By 2011, NOAA scientists concluded the sound was the cracking of an ice shelf during an icequake. In the summer of 1997, ...

The 1997 Bloop baffled scientists and inspired conspiracy theories, fiction, and cryptid speculation for years. Initially too powerful to match any known animal or machine, it was finally traced to a ...

Ocean researchers have recorded unidentified "quack" sounds in the sea for years. Credit: Mayehem / Getty Images Both scientists and sailors alike have recorded unique, strange noises in the ocean for ...

Bloop. That’s the sound a rock makes when it slams into Mars. At least, that’s what NASA’s InSight instrument picked up last September when it captured the faint — and, frankly, hilarious — sound of a ...