A beluga whale named Petrovich basks in sunlight bursting through ice at the Utrish dolphinarium in Utrish, Russia. Viktor Lyagushkin / Barcroft Media via Telegraph

A beluga whale named Petrovich basks in sunlight bursting through ice at the Utrish dolphinarium in Utrish, Russia. Viktor Lyagushkin / Barcroft Media via Telegraph