It's a whale of a mystery that scientists across the country are trying to solve — and one from the Vancouver Aquarium is leading the way.

Valeria Vergara, a research scientist at the Vancouver Aquarium Marine Science Centre, is trying to find out why the Beluga whale population in the St. Lawrence Estuary is decreasing so rapidly.

She and a handful of other Canadian scientists studied the whales in July and August, travelling to the area to explore the mystery first-hand. Read more