(Explained using only the ten hundred words people use the most often)
In a place surrounded by water, there are lots of small animals with big ears.
Then they left.
There were a couple small animals with big ears left behind because people used these animals to try out their killing stuff on them, instead of trying it out on people.
Because of this, the place surrounded by water became filled with small animals with big ears.
People like these animals a lot. So they visited the place to see the animals.
They liked the animals so much, they started turning other places surrounded by water into places filled with other small animals.
Also, they wanted the small animals in the first place to keep staying on that place, so they made sure the humans didn’t kill the animals.
The animals just keep having babies and people keep seeing them, even though they once used the animals to try out their killing stuff.