John Shaw / Common loon (Gavia immer) with a chick alongside. British Columbia, Canada. June.

Nick Hawkins / North Atlantic right whale (Eubalaena glacialis) tail fluke, diving to feed in the Gulf of Saint Lawrence, Canada. Endangered species. July

Nick Hawkins / Steller's sea lions (Eumetopias jubatus) off the coast of the Great Bear Rainforest, near Bella Bella, British Columbia, Canada. August

George Sanker / North American river otter (Lontra canadensis) swimming with head above water. Acadia National Park, Maine, USA. November.

Jack Dykinga / Aurora Borealis reflected in Polar Lake, conifers silhouetted at edge. Near Great Slave Lake, Northwest Territories, Canada. September 2018.

Jack Dykinga / Aurora Borealis display above conifers and Polar Lake. Near Great Slave Lake, Northwest Territories, Canada. September 2018.

Jack Dykinga / Aurora Borealis reflected in Polar Lake, wetland and conifers silhouetted along shore. Near Great Slave Lake, Northwest Territories, Canada. September 2018.

Tim Zurowski/ BIA / Northern Flicker (Colaptes auratus) male, British Columbia, Canada

Matthias Breiter / Aurora borealis above taiga, Whitehorse, Yukon Territory, Canada

Matthias Breiter / Aurora borealis above taiga, Whitehorse, Yukon Territory, Canada

Matthias Breiter / Aurora borealis above coast, Hudson Bay, Manitoba, Canada

Donald M. Jones / Common Raven (Corvus corax) walking in snow, western Alberta, Canada