Valium, health checks and fabric slings: the complex logistics of moving 30 beluga whales

Canada has reached a tentative deal for 30 belugas in an amusement park to be shipped to four aquariums in US

• It's heartbreaking': how 30 captive beluga whales have become pawns in row over animal cruelty

Before boarding the plane, the travellers will be given a dose of Valium to calm their nerves. For some, it will be the first time they've flown. Others have logged thousands of miles over the Pacific Ocean. Like most weary and anxious passengers, they will be offered minimal personal space on board and food isn't included in their fare.

But for these jet-setters, the tight quarters and minimal refreshments aren't meant to maximize airline profits: they're meant to keep them safe.