They were flown by FedEx to Minnesota; the trip took just over an hour.
The Brookfield Zoo's dolphins are initially being kept apart from the other dolphins at Minnesota Zoo: females April, 42, Allie, 18 and Spree, 5; and male Semo, 43.
Dolphin fans can keep an eye on Tapeko, Noelani and Allison at www.CZS.org/dolphins.
They will return to Brookfield when Seven Seas is complete in Spring 2010.