This bizarre footage shows other-worldly worms leaving large coils of sand on the seabed. While diver Vital Bazarov swam around the Red Sea off the coast of Egypt at the end of September, he spotted perfectly formed piles of sediment forming below him.
Intrigued, the experienced diver swam closer and observed acorn worms burrowed deep underground excreting the sand they had previously consumed. The creatures suck in the grains, pick out and eat plant and animal material, before discharging the filtered sands into the distinctive mounds.
Vital said: “I have spotted these deposits many times but have never seen them being formed."
Take a look at the footage below.