By Cynthia Silva

A female penguin couple have become parents to a newly hatched chick at one of Europe's largest aquariums.

Penguin "super moms" Electra and Viola adopted, incubated and raised an egg from another couple at Oceanogràfic València in Valencia, Spain, according to a statement on the aquarium's website. They are one of the aquarium’s three gentoo penguin couples to welcome a chick during the current breeding season.

“Although same-sex couples are common in more than 450 species in both zoos and nature, it's the first time this has happened in our aquarium,” Oceanogràfic València stated on its Facebook page. "Welcome to the world, little one!"

It all began when penguin caregivers noticed the pair showing signs that they were ready to reproduce, like constructing a nest out of pebbles. After observing this behavior, the aquarium decided to give the couple a fertile egg to raise. Read more via NBC