It's the first time humans have seen this in the wild.
They're watching for danger.
"Something made me go back."
Scientists have the answer.
"Oh my god, what have we stumbled into?"
The original genetic modification.
Thousands of people rallied to save it.
Hidden away in a remote valley.
Only in Australia.
This is huge for organ research.
Humans are on a "collision course with the natural world".
It was hidden for 128 years.
It was found off the coast of Portugal.