Belugas transferred from Niagara Falls are under round-the-clock monitoring after deaths: Chicago aquarium | CBC News

A Chicago aquarium says several of the belugas that were transferred to its site from Ontario's Marineland have health issues.

Shedd Aquarium said in a Friday statement it is conducting round-the-clock supervision, and teams are monitoring the whales' hydration, breathing rates, swim patterns, social interaction and other behaviors.

The aquarium's update comes after it reported last week that two of the three whales that died at its site in a week's span were belugas from Marineland, a theme park in Niagara Falls, Ont., that closed after it ran out of money.

Shedd has said that Peekachu, one of the Marineland belugas, died on Aug. 25 at its site, two weeks after being relocated.

A 20-year-old beluga named Rain, which was moved from Marineland to the Chicago park in mid-August, also died, as well as a 34-year-old beluga that had lived for decades in Chicago.

Another beluga whale sent from Marineland to Chicago's Shedd Aquarium has died

'I tried to say goodbye and tried to tell him I love him': Canada's last captive whales leave Marineland

The Shedd Aquarium said there is still uncertainty surrounding the health of the remaining animals, and it is awaiting lab results as the park investigates the deaths.

"Some of the rescued belugas are showing more encouraging signs than others, but several have presented clinical concerns," Shedd wrote in the statement Friday.

"Their condition can change from day to day and, at times, hour to hour."

The aquarium said belugas get most of their hydration through the fish they eat, and while some of the rescued whales are eating regularly, others are not.

As a whole, Shedd said, none of the belugas are "where we want them to be from a health standpoint."