Satellites have shown two mysterious 'black hole' whirlpools in the South Atlantic ocean - ultra powerful “vortexes” which suck water down into the depths.
The whirpools - never witnessed before - would suck down ships, debris and even living creatures, moving 1.3 million cubic metres of water per second.
Two of the black holes - or “maelstroms” - have been sighted in three months by physicists from Zurich and Miami.