The zoo recreated the climate of the area of Vietnam where these turtles come from, with its different seasons, to create an appropriate environment for reproduction.
There were three failed attempts before the turtles reproduced.
"I was very happy. It was really cool. You can see at an early stage that the eggs have been fertilized. Then I had to keep my fingers crossed and wait for 90 days," Jimmy Helgesson, who is responsible for the turtles at the zoo, tells TT.
Helgesson says that it is unlikely that the Vietnamese pond turtle still exists in the wild, as it has been a while since it has appeared in the illegal animal market in Vietnam.
"That is a sign that the situation is bad. But there are good chances that the species will survive, it's not impossible," he says.
Nordens ark is located on Sweden's west coast, between Gothenburg and the Norwegian border.