The alleged footage of the Martian food chain in action was filmed by the NASA Curiosity rover droid as it drilled into the surface to take samples.
A clip has been made from the footage by YouTube channel Mars Alive, which seeks out evidence of life in NASA pictures and videos, alleging that it shows the small alien predator feating on an even smaller creature.
The video, entitled “NASA What Has Curiosity Rover Detected Here? Explain!!” has attracted thousands of views.
UFO chaser Scott C Waring, of ufosightingsdaily.com, agrees it is proof of alien life.
He blogged: “Here you see the Curiosity rover drilling into the dirt on Mars and as it is, a small critter is seen walking away from the drill area.
“To top it off, the small creature walks just a little way, before something even bigger stretches out from below a rock and snags it.
“You see one arm in front of it, and a second behind it.
“So there is life on Mars, but its a vicious and short life to be had.
“It is really an extraordinary find, and very lucky.
“Sadly, the Curiosity rover is responsible for this creature’s death, since it scared it off, only to be eaten by some hungry predator with long arms.”
Mr Waring, who often fills in the blanks with his own theories, claimed it looked like “a crab-like creature camouflaged as a sharp triangle rock”.
He added: “Do you remember about six years back a rock labeled “the Mars Donut,” was seen to have moved, even though it was big?
“And the first time the Russian lander landed on Mars, a similar crab-like object was seen in one photo, but disappeared in the next, so what we have here is a smaller creature eaten by a larger one that can appear like a rock, but move at high speeds when attacking.”
Viewers of the video had mixed reactions.
Terry O’Neill posted on YouTube: “Looked like an insect to me. I could see legs.”
Amber Foster added: “I could see the legs too – looked like a sort of granddaddy spider.”
But others say the two “creatures” were just small stones moving.
One user called Beer Money posted: “A rock moving due to vibration from the drill.”
Kanal khan replied: “Agreed, as you can see dust coming out from the cracks.”
Kenneth Atkins said: “Little Rocks moving under the vibration of the drill.”
Daily Express :: Weird Feed