This transport "issue" just shows why we have no business transporting them in the first place.
For reference, the CNN documentary Blackfish is a good place to start.
> Why not release the belugas into the ocean?
> It's geopolitically difficult to return many belugas to their native waters, because many come from Russia, Lott said.
> Sending the Marineland belugas into the wild would have been "inhumane," Trites said. At least half of the animals were born into captivity, so they don't know how to hunt and wouldn't be accepted by the local beluga population.
> "The animals are so social that they can't survive on their own," he said.
long live the zygons!