The aquarium and the city have lost a good friend.

Barney, the Seattle Aquarium’s longtime harbor seal, has passed away at the age of 39 — roughly the equivalent of a centenarian in human years. He was the first harbor seal born at the Aquarium in 1985. He was also one of the oldest harbor seals in human care. 

If you’ve been to the Aquarium over the years, even just once, chances are you saw Barney — maybe watching him lounge in the sun before barrel rolling into the water.

Barney celebrating his 39th birthday.

Photos courtesy of Seattle Aquarium

“We know that many in the community will join the Aquarium’s staff and volunteers in mourning this loss. Barney will be remembered and missed,” says Aquarium President and CEO Bob Davidson.

Like any aging legend, Barney had his share of health concerns, but the veterinary and animal care teams kept him as comfortable as possible. “Barney had great trust in his human caregivers and his home,” says Dr. Caitlin Hadfield, who had worked with him since 2017. “We learned a lot from each other.” When his health took an acute downturn in recent weeks, the Aquarium made the difficult decision to humanely euthanize him on March 14.

Harbor seals are known for their curiosity and playful nature, but Barney had something special — a calm, easygoing presence. “You’ll leave a big hole — but thank you for all the memories, Barn,” says Supervisor of Birds and Mammals Mariko Buschkamp. “Barney and I were the same age and I knew him for nearly half my life.”

“He inspired a stronger curiosity about the ocean in millions of people — a curiosity that inspired action for the conservation of our marine environment,” Davidson says.

Watching videos of Barney, it’s clear he was a silly, happy guy — 39 years of making people smile and kids fall in love with the ocean. His impact will last far beyond his four decades.

The Seattle Aquarium, founded in 1977, is dedicated to marine conservation, education, and species recovery. In May, Peggy Sloan will take over as CEO, replacing Davidson, who is retiring after 23 years. Named one of Seattle magazine’s Most Influential People of 2025, Davidson helped transform the Aquarium, leading projects such as the Ocean Pavilion and public rooftop, and played a key role in Seattle’s $800 million waterfront renovation.