Kraken are funny. This is not just because they look weird. It is not because they are worryingly smart. That's because they have a strange power.
The ability to work on their own bodies. Biologists scratch themselves on the head.
Evolution does not work that way. It is said to be stimulated by genetic mutations – a change in DNA – that are beneficial to the host.
So how could a creature develop in such a way that it can rebuild itself?
Now a new train of thought has emerged.
They did not do it. At least not here. Instead, it's an advanced biological ability that came from outer space.
THE KRAKEN WAX
In April of last year, researchers found cuttlefish – and some of their squid and squid cousins - that regularly process their RNA.  This distinguishes them from the rest of the animal world.
RNA, like DNA, records genetic code. But where DNA is a double-stranded molecule, RNA consists of only one strand. Its role in our body is to transmit genetic information to trigger the production of proteins.
But some scientists believe that RNA could have been the original DNA that functions as a permanent storehouse of genetic code among the earliest organisms in the world. Like the common octopus cuttlefish, researchers find that up to 60 percent of the RNA in their nervous system has been processed after she was programmed by the DNA. These changes adapted his brain to changing temperatures in his habitat.
Two octopus species were discovered last year, and one of squid does the same – routinely.
"This shows that high levels of RNA editing are present … (is) an invention of coleoid cephalopods," said US Marine Biological Laboratory researcher Joshua Rosenthal.
How this ability is triggered or controlled is not yet known.
"It could be something as simple as temperature changes or as complicated as experience, a form of memory," says Rosenthal.
But the ability to spontaneously change physiology has its price.
Coleoids do not develop much.
That could be because the drive is not there: they've found that editing RNA is a way to adapt and survive. Therefore, their DNA does not have to be changed.
"The conclusion here is that in order to maintain this flexibility in RNA processing, the colloids had to give up the ability to develop in the surrounding regions – a lot", Rosenthal
The origin of life on earth is one of the toughest nuts for science to crack. We know a lot about the chemistry. But not the circumstances that bring everything together to form a living entity.
There is still a gap in our understanding, big enough for gods and other extraordinary ideas to fit in.
It is the idea that life here began there – with dispersions of organic molecules that carried their preprogrammed codes for life in the Gulf of Time and Space.
Evidence is missing.
But the idea is being investigated.
Now a peer – reviewed article published in the journal Progress in Biophysics and Molecular Biology stimulates the origins of life
The recent Rosetta mission to comet 67P Churyumov-Gerasimenko confirmed organic molecules sugar and amino acids have been dusted from frozen ice in the mountains and valleys.
It is not life.
But these materials are the building blocks of DNA.
The New Report, Cause of the Cambrian Explosive Terrestrial or Cosmic argues that our existence is not based solely on these interplanetary building blocks.
Instead, she builds on the idea that our biochemistry has been contaminated by influences from outside our own planet.
The authors argue that about 500 million years ago, a cloud of organic material was probably raining down to Earth. And that changed everything.
The Cambrian explosion is certainly mysterious. It was a time period in which life on earth diversified dramatically and rapidly.
It is an event that took place shortly after the appearance of retroviruses in our environment.
It was particularly dramatic for a mollusk called a cephalopod. Tentacles stretched out of their shells and made their way into an enormous variety of creatures that eventually became squid, cuttlefish and squid that we know today.
"We believe that this coincidence is not coincidence, but coincides with a key prediction The evolutionary limits of extinction diversification are consistent with viral cometary bolide bombardment," the study's summary states.
This idea states that space retroviruses eventually found their way to the earth's surface before joining living organisms. Once there, they reprogrammed the evolution of the creatures.
"A second focus is the remarkable development of intelligent complexity (cephalopods) that culminates in the genesis of octopus," the study said.
"A third focus concerns the microorganism fossil evidence contained in meteorites, as well as the detection of apparent incoming, life-bearing particles from outer space in the upper atmosphere."
The work argues that the spatial transmission of life on a larger scale than just retroviruses is possible. Whole sets of frozen genetic material were thrown across the stellar winds before they splashed in our oceans.
Here they thawed.
"There was a chance that cryopreserved cuttlefish and / or squid eggs would arrive in icy cars millions of years ago should not be underestimated," the study said.
Therefore, squid are aliens.
It's an interesting guess. It's an idea that suits the circumstances. But concrete evidence still needs to be created. The idea still needs to be tested.
But it is tempting.
"Life could have been sown here on Earth by viable comets as soon as conditions on earth made it possible to thrive (about before or 4.1 billion years ago), and living organisms such as space- and space-stable bacteria, viruses, more complex eukaryotic cells, fertilized oocytes and seeds have been continuously brought to Earth since then and are thus an important driver of further terrestrial evolution, which has led to considerable genetic diversity that has led to the emergence of humanity. "
This story originally appeared in News. com.au.