Computer models helped decode whale communication. But some scientists say there are barriers that cannot be overcome.

The Beluga -- billed by Airbus as the world's biggest cargo plane in terms of volume transported -- looks something like a whale, with a rounded fuselage mounted on an Airbus A300-600 base.

The study says the orcas could also affect humans, by "adding top-down pressure ... Arctic have been observed preying mostly on beluga whales and narwhals, followed by bowhead whales and seals.