View of the Avon-Heathcote estuary from Sumner, showing Sumner ...

People fishing at the mouth of the Waimakariri River.

Long boards lining up on Sumner beach.

Long Boarding competitors at Single Fin Mingle 2019.

Surfing a long board at Single Fin Mingle Contest 2019 at ...

Surfer hanging five during the 2019 Single Fin Mingle festival ...

Smiling surfer paddles out during the 2019 Single Fin Mingle ...

Long boarder prepares for a morning surf at Single Fin Mingle ...

Competitors high five during a longboard competition.

A longboarder shows off his moves at the Single Fin Mingle ...

A longboarder dives through the waves at the Single Fin Mingle ...

Competitors at the Single Fin Mingle ride the waves.

Two friends surf together at the Single Fin Mingle Competition ...

Sumner beach draws a crowd for a longboard competition.

Spectators watch the Single Fin Mingle competition from the ...

A competitor at the Single Fin Mingle shows off his moves.

A line-up of longboards on the grass at Sumner beach.

A competitor looks for a good wave at the Single Fin Mingle ...

Longboarders get ready for the Single Fin Mingle competition.

Ranging south on horseback along Woodend Beach.

Seaward view from Earthquake Hill in Bottle Lake Forest, a mound ...