In this Friday April 10, 2020 photo, mammal trainer Patty Schilling, right, and her coworkers wear protective masks as they feed and check the health of Atlantic harbor seals in an outdoor exhibit at the New England Aquarium in Boston. The workers who feed and train seals have been donning masks as a safeguard to avoid the unlikely scenario of unknowingly infecting the animals with the coronavirus, after concerns rose after a tiger at New York’s Bronx zoo tested positive for the virus. The aquarium is closed to the public due to the virus outbreak. (AP Photo/Charles Krupa) 
In this Friday April 10, 2020 photo, Amelia, a harbor seal opens her mouth as mammal trainer Terra Wilson brushes her teeth at an outdoor exhibit at the New England Aquarium in Boston. The workers who feed and train Atlantic harbor seals have been donning masks as a safeguard to avoid the unlikely scenario of unknowingly infecting the animals with the coronavirus, after concerns rose after a tiger at New York’s Bronx zoo tested positive for the virus. The aquarium is closed to the public due to the virus outbreak. (AP Photo/Charles Krupa) 
In this Friday April 10, 2020 photo, mammal trainer Terra Wilson, right, wears a protective mask as she attends to the needs of seals in an outdoor exhibit at the New England Aquarium in Boston. The workers who feed and train Atlantic harbor seals have been donning masks as a safeguard to avoid the unlikely scenario of unknowingly infecting the animals with the coronavirus, after concerns rose after a tiger at New York’s Bronx zoo tested positive for the virus. At rear is the Marriott Long Wharf Hotel, which shut down after many cases of coronavirus clustered from a conference hosted at the property in late February 2020. The aquarium is closed to the public due to the virus outbreak. (AP Photo/Charles Krupa) 
In this Friday April 10, 2020 photo, a young passerby watches as Chacoda, an Atlantic harbor seal, leaps out of the water at an outdoor exhibit at the New England Aquarium in Boston. The workers who feed and train the seals have been donning masks as a safeguard to avoid the unlikely scenario of unknowingly infecting the animals with the coronavirus, after concerns rose after a tiger at New York’s Bronx zoo tested positive for the virus. The aquarium is closed to the public due to the virus outbreak. (AP Photo/Charles Krupa) 
In this Friday April 10, 2020 photo mammal trainer Patty Schilling wears a protective mask while watching Chacoda, an Atlantic harbor seal, leap out of the water at an outdoor exhibit at the New England Aquarium in Boston. The workers who feed and train the seals have been donning masks as a safeguard to avoid the unlikely scenario of unknowingly infecting the animals with the coronavirus, after concerns rose after a tiger at New York’s Bronx zoo tested positive for the virus. The aquarium is closed to the public due to the virus outbreak. (AP Photo/Charles Krupa)
BOSTON | Humans can’t always recognize each other in face masks, so imagine the confusion that wild animals in captivity must feel.
At the New England Aquarium in Boston, workers who feed and train Atlantic harbor seals have been donning masks as a safeguard to avoid the unlikely scenario of unknowingly infecting the animals with the coronavirus.
Concerns rose last week after a tiger at New York’s Bronx Zoo tested positive for the virus.
And the New England Aquarium is next door to the harborside hotel where Biogen, a Boston biotech company, held a conference in February where dozens of people became infected with the virus.
“Everyone who is working currently at New England Aquarium is wearing a face mask,” said the aquarium’s marine mammals supervisor, Patty Schilling.
But getting the seals used to the masks takes some doing.
“We want them to be comfortable with the fact that we have this on. So initially we do a process called desensitization, and basically that just means that we teach them to get used to something in small steps,” Schilling said.
During a recent training session, a handful of passersby reveled in the distraction of watching seals getting their teeth brushed, eating, clapping their hands and dancing playfully in the water.
Underscoring how intelligent the animals are, one seal even made a vocal attempt to mimic a trainer saying, “How are you?”
“The most important thing that we do initially is build a relationship with them so that they have trust in us,” Schilling said.