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"Urmas Tartes won the Animals in their Environment category for this image of a springtail, otherwise known as a "snow flea" navigating its way through delicate snowflakes.
When the temperature drops below freezing, the insect climbs down through the frosty crevasses to the warmer soil below.
"But they're only active a few degrees below zero," Mr Tartes told BBC News. "I had to 'ambush' the weather for just the right temperature and conditions.
"I was travelling with my wife and it started snowing slightly," he recalled.
"We came to a place where we thought it might be possible [to see the insects] and the thermometer in the car said it was just the right temperature."
Mr Tartes had waited for the perfect weather in which the snow fleas would be active, but the snowflakes would remain frozen.
His patience paid off, and he managed to take over 100 shots while the insects negotiated their way through the tricky terrain.
He believes he captured something truly unique and that this was largely thanks to his knowledge of his country and its climate.
"I think the best of the photos I take are in my homeland," he told BBC News.
"There's a saying in Estonia that in order to see new things, you have to follow common paths - paths you know."
Canon EOS-5D Mark II + Canon MP-E65 f2.5 1-5x Macro lens; 1/200 sec at f14; ISO 400"
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