Ole Jorgen Liodden / Male Hooker's / New Zealand sea lion (Phocarctos hookeri) in water, Campbell Island, New Zealand, sub Antarctic Islands. November.

Sue Flood / Abandoned Russian research base, Hooker Island, Franz Josef Land, Russian Arctic, July 2007

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) cow bonding with young pup, Enderby Island, Auckland Islands, New Zealand

Tim Edwards / Summit ridges of Mount Cook from Hooker Valley. South Island, New Zealand

Colin Monteath / Mounts Sefton, Hooker Glacier, and Mount Cook seen from summit of Mount Kinsey, Mount Cook National Park, Canterbury, New Zealand

Colin Monteath / East face of Mount Sefton above Hooker Valley and glacial lake, Mount Cook National Park, Canterbury, New Zealand

Colin Monteath / South face of Mount Cook above Hooker Valley with glacial lake, Mount Cook National Park, Canterbury, New Zealand

Ernie Janes / Hikers on path approaching the Mueller and Hooker Glacier Lake, Mount Cook National Park, South Island, New Zealand

Ernie Janes / Hooker glacier lake, Mount Cook NP, South Island, New Zealand

Ernie Janes / Hooker Valley Glacier and Lake, Mount Cook NP, South Island, New Zealand

Ernie Janes / Hooker glacier lake, Mount Cook NP, South Island, New Zealand

Bryan and Cherry Alexander / Remains of outside toilet at old polar station at Tichaya Bay. Hooker Island, Franz Josef Land, Russia, 2004.

Bryan and Cherry Alexander / Old buildings and dog kennels at old polar station at Tichaya Bay. Hooker Island, Franz Josef Land, Russia, 2004.

Bryan and Cherry Alexander / Bow of icebreaker "Kapitan Dranitsyn" approaching Rubini Rock bird cliffs. Hooker Island, Franz Josef Land, Russia, 2004.

Bryan and Cherry Alexander / Commemorative monument at old polar station at Tichaya Bay. Hooker Island, Franz Josef Land, Russia, 2004.

Bryan and Cherry Alexander / Tourists in inflatable boat visiting Rubini Rock bird cliffs. Hooker Island, Franz Josef Land, Russia, 2004.

Sue Flood / Sedova Station, an abandoned Russian base, Tikhaya Bukhta, Hooker Island, Franz Josef Land, Russia, July 2008

Sue Flood / Male Hooker's / New Zealand sealion (Phocarctos hookeri) yawning, amongst flowers, Enderby Island, New Zealand, sub Antarctic Islands, December

Colin Monteath / Great Mountain Buttercup (Ranunculus lyallii) with Mount Cook in the background, Hooker Valley, Mount Cook National Park, South Island, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) females fighting over space in breeding colony, Enderby Island, Auckland Islands, sub-Antarctica New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri), young bull searching for females hiding in tussock grass, Enderby Island, Auckland Islands, sub-Antarctic New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) breeding colony at peak season, Enderby Island, Auckland Islands, sub-Antarctica New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) sleeping mother with nursing pup, Enderby Island, Auckland Islands, sub-Antarctic New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) female picking up newborn, Enderby Island, Auckland Islands, sub-Antarctica New Zealand

Sue Flood / Auks, kittiwakes and guillemots nesting on columnar basalt at Rubini Rock, off Hooker Island, Franz Josef Land, Russian Arctic

Sue Flood / Abandoned polar research station on Hooker Island, Franz Josef Land, Russian Arctic

Konrad Wothe / Hooker's Sea Lion (Phocarctos hookeri) mother and nursing pup, Enderby Island, Auckland Islands, New Zealand

David Noton / Mount Cook from the Hooker Valley, Aoraki National Park, South Island, New Zealand

Colin Monteath / Mt Cook at sunset above cloud-filled Hooker Valley, Mt Cook National Park, New Zealand

Rob Tilley / Mt Cook + Hooker river, Mt Cook NP, South Island, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) mother and pup, Auckland Island, New Zealand

Colin Monteath / Mt Cook or Aoraki, aerial view of south face above Hooker Valley, Southern Alps, New Zealand

Konrad Wothe / Hooker's Sea Lion (Phocarctos hookeri) mother nuzzling pup, Enderby Island, Auckland Islands, New Zealand

Konrad Wothe / Hooker's Sea Lion (Phocarctos hookeri) couple mating, Enderby Island, Auckland Islands, New Zealand

Konrad Wothe / Hooker's Sea Lion (Phocarctos hookeri) mother giving birth to pup, Enderby Island, Auckland Islands, New Zealand

Konrad Wothe / Hooker's Sea Lion (Phocarctos hookeri) mother giving birth to pup, Enderby Island, Auckland Islands, New Zealand

Konrad Wothe / Hooker's Sea Lion (Phocarctos hookeri) couple mating, Enderby Island, Auckland Islands, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) three month old pup playing, Enderby Island, Auckland Islands, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) two young pups playing, Enderby Island, Auckland Islands, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) pair of three month old pups playing in peat wallow while mothers are away, Enderby Island, Auckland Islands, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) cow sparring with young bull, Perseverance Harbour, Campbell Island, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) four young pups in rata forest, Enderby Island, Auckland Islands, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) group frolicking underwater near breeding colony, Enderby Island, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) young pups playing in rata forest, Enderby Island, Auckland Islands, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) breeding cow, Enderby Island, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) cows and pups interacting, Enderby Island, Auckland Islands, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) two young pups playing, Enderby Island, Auckland Islands, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) cow sparring with young bull, Perseverance Harbour, Campbell Island, New Zealand

Tui De Roy / Hooker's Sea Lion (Phocarctos hookeri) on cliffs edge, deeply eroded volcanic coast pounded by storms, Monument Harbour, Campbell Island, New Zealand

Tim Edwards / Southern face of Mount Cook and Hooker Valley. Mount Cook NP. South Island, New Zealand

Tim Edwards / Southern face of Mount Cook and Hooker Valley showing morraine walls and lakes, Mount Cook NP. South Island, New Zealand

Colin Monteath / Mount Sefton at dawn seen from Mount Kinsey, Hooker Valley, Mount Cook National Park, Canterbury, New Zealand

Colin Monteath / Mount Sefton at dawn seen from Mount Kinsey, Hooker Valley, Mount Cook National Park, Canterbury, New Zealand

Colin Monteath / South face of Mount Cook above Hooker Valley with glacial lake, Mount Cook National Park, Canterbury, New Zealand

Pete Oxford / New Zealand / Hooker's sealion (Phocarctos hookeri) rookery on beach. Enderby Island, Auckland Islands, New Zealand

Sue Flood / Commemorative monument at the old polar station at Tichaya Bay. Hooker Island, Franz Josef Land, Russian Arctic