Photography

Ilya Katsman, 22, saw the weather phenomenon from a window on a flight from Perth to Adelaide.

Neil Bennett, from Australia's Bureau of Meteorology, said it was likely to be a wave cloud.

"It's like skimming a stone across a lake. The air is rising up and down in a wave motion," Mr Bennett said.

"Where it's going up you're getting the cloud, and where its going down you're getting the clear lines."

Photography, put simply, is the art of capturing a memory through an image.

People have become too obsessed with how good the image is, that the art of photography itself is, at most times, overlooked.

Maybe digitally, maybe on film, the medium is never as important as the memory or moment caught.

A group of people, a sunset, or even a fish jumping out of the water, a photograph is a way to feel the emotion and context of that exact moment.

August 19 is the day set aside to recognise and celebrate this art.

In a world where millions of pictures are uploaded every minute, World Photo Day is inspiring thousands of photographers across the planet to share a single photo with a simple purpose: to share their world with the world.

From everyday life to incredible landscapes, our global gallery is an evolving mosaic of images captured by photographers of all skills levels living in a diverse range of countries and cultures.

In his photo series "Greetings from Mars," photographer Julien Mauve imagines life as a tourist on the Red Planet -- selfie-stick and all.

The irreverent photos were awarded the 2016 Sony World Photography Award for professional conceptual photography.

CNN Style spoke to Mauve to find out why he turned his lens to life on mars.

What inspired "Greeting from Mars"?

RNZI reports Vlad Sokhin has travelled to at least 10 of the region's countries and territories for his project, "Warm Waters", documenting sea level rise, changing weather patterns, and food and water shortages.

Mr Sokhin said he hopes his work will expose what's going on in some of the most isolated parts of the world in the international arena.