More information about the 18 belugas to be imported:
If everything is carried out, the initial distribution of the 18 animals proposed to be imported will be: three will be going to the Georgia Aquarium; Shedd will receive four animals; SW San Antonio, six; SW Orlando, two; and SW San Diego, three. All the whales will be owned by the Georgia Aquarium, so the transfers will be made under breeding loan agreements. At first, it seems that Mystic Aquarium won't receive any, but some animals might be transported there in the future. Most of the whales were captured in 2010, but some of them in 2006 and 2011.
More information including legal documents can be found here:
Georgia Aquarium Application to Import 18 Beluga Whales (File No. 17324) :: NOAA Fisheries