MADRID, June 20 (Reuters) - Marine biologists have moved a pair of beluga whales from the Ukrainian city of Kharkiv - the target of daily shelling by Russian forces - to the eastern Spanish city of Valencia, in what they described as a long and risky international rescue operation.

The animals, 15-year-old male Plombir and 14-year-old female Miranda, arrived at Valencia’s famed Oceanografic complex late on Monday in a fragile state of health, according to a statement by the Spanish oceanarium.