researchers noticed several instances of deep-sea fish seemingly swimming backward. Were they seeing that right? For years, scientists assumed that, “in the darkness and relatively featureless ...

The footage, captured in Spain's Canary Islands, shows the female fish, whose Latin name translates to "black sea monster," swimming through the light-filled ocean waters off the coast of Tenerife.

The footage, captured in Spain's Canary Islands, shows the female fish, whose Latin name translates to "black sea monster," swimming through the light-filled ocean waters off the coast of Tenerife.

According to the organization, the fish is a so-called "black seadevil" known by its scientific name Melanocetus johnsonii. They typically swim between 650 and 6,500 feet below the ocean's surface.