Zoo's last sea lions die after reaching old age

Alice CunninghamEssex
News imageColchester Zoological Society Two sea lions look at each other as they rest in a zoo enclosure. They are both a grey and brown colour with long white whiskers. A puddle of water from a nearby pool for them can be seen behind them. Colchester Zoological Society
Colchester Zoo's last sea lions Sydney and Milan have been put to sleep

A zoo's last two sea lions have died after being put to sleep "in the interest of their welfare".

Colchester Zoo's Sydney and Milan had reached "geriatric age" and a decision was made to put them to sleep on Friday.

The Essex zoo said while it was proud of the care it provided older animals, "there comes a time when continuing to do so would cause them to suffer".

It comes after another sea lion, Winnipeg, who had also reached an old age, was put to sleep in February.

News imageColchester Zoological Society A sea lion rests on a rocky enclosure. Its head is slightly tilted as it looks toward the camera. Colchester Zoological Society
Sydney was described as having "incredible energy" by the zoo

According to The MarineBio Conservation Society, Patagonia sea lions typically live into their 20s.

"Sydney and Milan both built irreplaceable bonds with the animal care team over the years, particularly those who had the privilege of working alongside them day in, day out," the zoo said in a statement.

"Losing an animal is like saying goodbye to a member of the family, and this is a truly devastating loss for everyone.

"Our thoughts are very much with the team during this incredibly sad time."

News imageColchester Zoological Society A sea lion swimming in a large pool of water at a zoo enclosure. Colchester Zoological Society
The zoo said Milan grew with confidence as she got older

The attraction said that Sydney had been "the sensible one" who had "incredible energy" and enjoyed one-to-one sessions with her keepers.

They added that she had a presence that made everyone feel at ease and she was often found basking on her favourite rock lovingly named Sydney's Armchair.

The zoo described Milan as "the golden girl" and the shyest of the group, with her keepers stating that she had a unique vocalisation.

"Sydney and Milan are truly irreplaceable, and they will be deeply missed by every member of the team who was lucky enough to know and care for them, and of course the huge number of visitors and supporters that fell in love with them over the years," the zoo added.

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