President Michael D Higgins has opened Dublin Zoo's Sea Lion Cove, described as "the biggest and most exciting development undertaken by Dublin Zoo in a number of years".
The saltwater habitat will be home to the zoo's colony of California sea lions and was inspired by their natural environment.
Females Cassie, Florence and Seanna and male Nico are expected to be joined by more sea lions in the coming years.
Leo Oosterweghel, Director of Dublin Zoo, said: "Today marks the culmination of one of the most challenging yet enjoyable projects we have ever undertaken at Dublin Zoo."
He continued: "Every detail of this wonderful saltwater habitat has been considered carefully with the needs of the sea lions in mind and always inspired by their natural habitat.
"This new home should encourage them to continue breeding and to encourage their natural behaviours, giving visitors an amazing insight into sea lion behaviour."
He added: "The build was very complex and as the construction took place on the site of a former lake, there were significant engineering challenges. But the result is a fantastic new habitat for the sea lions at Dublin Zoo and an excellent visitor experience.
"We are especially pleased to have President of Ireland Michael D Higgins with us today to celebrate as these beautiful animals enjoy their new home."
The Zoo continues on RTÉ One on Thursday at 7:00pm.
