Floris van Breugel / Black and white photograph of Ice crystals up to 12 inches long along a small creek in a remote valley, Brooks Range, Gates of the Arctic National Park, Alaska, August 2014.

Jim Brandenburg / Ice crystals, Lake Superior, Michigan

Espen Bergersen / People framed in crystal clear ice on diamond beach, Iceland. Commended in the Nordic Nature Photo Contest 2019.

Ingo Arndt / Ice crystals on icicles. Lake Baikal, Siberia, Russia. February.

Heather Angel / Bamboo encased by icicles formed beside a waterfall. Wolong, Sichuan Province, China. February.

Sandra Bartocha / Close up of patterns of ice crystals, Kayla, Finland, March.

Michel Roggo / Iceberg reflected in still water of the Crystal Sound, near Detaille Island, Antarctic Peninsula, Antarctica January 2017. Photographed for The Freshwater Project

Michel Roggo / Icebergs, Crystal Sound, near Detaille Island, Antarctic Peninsula, Antarctica January 2017. Photographed for The Freshwater Project

Kim Taylor / Ice crystals viewed by polarised light.

Kim Taylor / Sheet ice crystals viewed by polarised light.

Ingo Arndt / Ice crystal, Weddell Sea, Antarctica

Ingo Arndt / Ice crystal from Weddell Sea, Antarctica

Pal Hermansen / The first structures of new ice, Norway

Kirkendall-Spring / Ice flow, Boy Scout Cave, Craters Of The Moon National Monument, Idaho, USA, July 2015.

Solvin Zankl / Ice crystal on Oak tree (Quercus sp) branch. Westensee, Kiel Germany, March.

Brent Stephenson / Icebergs floating in crystal clear calm waters with underwater part of iceberg visible. Wispy clouds and reflections, Neko Harbour, Antarctic Peninsula, Antarctica, January.

Alex Hyde / Ice crystals catching the first light of the day, Peak District National Park, Derbyshire, UK. December.

Alex Hyde / Ice crystals catching the first light of the day, Peak District National Park, Derbyshire, UK. December.

Ingo Arndt / Ice crystals reflecting light in ring around moon, Ostional Beach, Costa Rica

Ingo Arndt / Ice crystal on window, Germany

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Steve Gettle / Snowflake seen through microscope

Chadden Hunter / Delicate ice crystal formations inside volcanic ice cave, Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / BBC producer Chadden Hunter looking at the incredible ice crystal formations inside volcanic ice caves below Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Chadden Hunter / Delicate ice crystal formations inside volcanic ice cave, Mount Erebus, Antarctica. Taken on location for BBC Frozen Planet series, 2009

Bryan and Cherry Alexander / Crystal heart of an iceberg, Greenland, 1980. 40 BELOW bookplate.

Edwin Giesbers / Sunlight through ice crystal formations on waterside plants in winter, the Netherlands

Sue Flood / Leopard seal (Hydrurga leptonyx) female with young pup on sea ice, Crystal Sound, Antarctica, November

Kevin Schafer / Sun halo, caused by ice crystals in high clouds, Iceland

Grant Dixon / Ice and frost patterns on window

Nature Production / Snow crystal (photomicroscopy x 40)

Nature Production / Snow crystal (photomicroscopy x 40)

Nature Production / Snow crystal (photomicroscopy x 20)

Nature Production / Snow crystal (photomicroscopy x 20)

Nature Production / Snow crystal (photomicroscopy x 15)

Nature Production / Snow crystal (photomicroscopy x 25)

Nature Production / Snow crystal (photomicroscopy x 25)

Nature Production / Snow crystal (photomicroscopy x 20)

Nature Production / Hail crystal (photomicroscopy x 40)

Nature Production / Snow crystal (photomicroscopy x 40)

Nature Production / Snow crystal (photomicroscopy x 25)

Nature Production / Snow crystal (photomicroscopy x 20)

Jim Brandenburg / Marguerite (Leucanthemum vulgare) pair covered with frost, Minnesota

Konrad Wothe / Close-up of a snowflake showing delicate crystals, Germany

Konrad Wothe / Ice crystals on frozen pond, Bavaria, Germany

Colin Monteath / Khongor Sand Dunes and frozen river with frost crystals on grass, Gobi Desert, Mongolia

Steve Gettle / Snowflakes seen through microscope

Steve Gettle / Snowflakes seen through microscope

Steve Gettle / Snowflakes seen through microscope

Steve Gettle / Snowflake seen through microscope

Kim Taylor / Snow crystal on frosted moss

Nature Production / Snow crystal, micrograph x 40, Japan

Jim Brandenburg / Lake Superior ice crystals, Michigan

Jim Brandenburg / Backlit ice crystals, Lake Superior, Michigan

Michael Quinton / Ice crystals on frozen creek, Wrangell-St Elias National Park, Alaska

Michael Quinton / Ice crystals on frozen creek, Wrangell-St Elias National Park, Alaska

Doug Allan / Young sea ice with frost flower ice crystals near shore, Signy Island, South Orkneys, Antarctica, May 1980.

Alastair MacEwen / Close up timelapse of water freezing and ice crystals forming around vegetation. Timelapse created from stills and shot inside a specialist freezing cabinet, intended to imitate freshwater edges freez...

Alastair MacEwen / Close up timelapse of ice crystals forming on grass. Timelapse created from stills and shot inside a specialist freezing cabinet, intended to imitate freshwater edges freezing. Controlled conditions.

Alastair MacEwen / Timelapse of water freezing and ice forming on surface. Timelapse created from stills and shot inside a specialist freezing cabinet, intended to imitate freshwater edges freezing. Controlled condition...

Alastair MacEwen / Timelapse of water freezing and ice forming around vegetation. Timelapse created from stills and shot inside a specialist freezing cabinet, intended to imitate freshwater edges freezing. Controlled co...

Alastair MacEwen / Timelapse of water freezing and ice forming around vegetation. Timelapse created from stills and shot inside a specialist freezing cabinet, intended to imitate freshwater edges freezing. Controlled co...

Alastair MacEwen / Close up timelapse of ice crystals forming on grass. Timelapse created from stills and shot inside a specialist freezing cabinet, intended to imitate freshwater edges freezing. Controlled conditions.

Alastair MacEwen / Close up timelapse of ice crystals forming on grass. Timelapse created from stills and shot inside a specialist freezing cabinet, intended to imitate freshwater edges freezing. Controlled conditions.

Alastair MacEwen / Close up timelapse of ice crystals forming on grass. Timelapse created from stills and shot inside a specialist freezing cabinet, intended to imitate freshwater edges freezing. Controlled conditions.

Alastair MacEwen / Close up timelapse of ice crystals forming on vegetation. Timelapse created from stills and shot inside a specialist freezing cabinet, intended to imitate freshwater edges freezing. Controlled conditi...