Some suggested that it might have been caused by ship engines or even fishing boat ... melting into the sea. Debunking the ...

As they reviewed the hundreds of hours of footage, researchers noticed several instances of deep-sea fish seemingly swimming backward. Were they seeing that right? For years, scie ...

Is it a fish? Is it a sea monster? Is it Cthulhu ... The sound came to be called “the bloop” and remained a mystery for more than a decade. Like everyone else on the planet, the PMEL researchers ...

Miles below, a deep-sea fish approached the camera’s bait then, changing its mind, swam backward to escape. The footage turned out to be a first-of-its-kind sighting — but it wasn’t the last.