David Woodfall / Buff tailed bumble bee (Bombus terrestris) on Marsh Woundwort (Stachys palustris) North Wales, UK, July.

Richard Steel / 2020VISION / Female Goosander (Mergus merganser) drying feathers, Gwynedd, Wales, UK, January.

Richard Steel / 2020VISION / Male Goosander (Mergus merganser) flying over water, Gwynedd, Wales, UK, February.

Graham Eaton / A split level image of a small mountain stream. Cwm Idwal, Snowdonia, Wales, September 2011.

Graham Eaton / An underwater view of a woodland stream, River Glaslyn, Snowdonia NP, Gwynedd, Wales, UK, May

Graham Eaton / A low angle view of a waterfall, from within a mountain stream, Ogwen Cottage, Snowdonia NP, Gwynedd, Wales, UK, February

Graham Eaton / Underwater landscape within a mountain stream, showing water turbulence, Snowdonia NP, Gwynedd, Wales, UK, December

Graham Eaton / View looking up a waterfall from within a stream, Snowdonia NP, Gwynedd Wales, UK, December

Graham Eaton / A split-level image of a mountain stream, in autumn, with water droplets on lens, Nant Ffrancon Valley, Snowdonia NP, Gwynedd, Wales, UK, October

Graham Eaton / View towards Arenig Fach over open moorland, with stormy sky and dark clouds. Snowdonia NP, Gwynedd, Wales, UK, October

Graham Eaton / Underwater view of a rapidly flowing mountain stream, Snowdonia NP, Gwynedd, Wales, UK, November

Graham Eaton / View of frozen Llynnau Mymbyr, a mountain lake, with fog partly revealing a mountain ridge, Snowdonia NP, Gwynedd, Wales, UK, December

Graham Eaton / A split-level view through a small waterfall, Llanberis, Snowdonia NP, Gwynedd, Wales, UK, July

Graham Eaton / Underwater view of a mountain lake, Llyn Idwal, Snowdonia NP, Gwynedd, Wales, UK, December

Graham Eaton / Underwater view of a mountain lake with frozen surface, Llyn Idwal, Snowdonia NP, Gwynedd, Wales, UK, December

Graham Eaton / Split level shot of Llyn Idwal and Cwm Idwal, showing freshwater habitat with Green lacustrine algae (Chlorophyceae sp.), Snowdonia NP, Gwynedd, Wales, UK, August

Graham Eaton / Underwater view of a mountain lake, Llyn Idwal, Gwynedd, Snowdonia NP, Wales, UK, December

Graham Eaton / Underwater view of River Glaslyn rapids, Snowdonia NP, Gwynedd, Wales, UK, April

Graham Eaton / View towards Bardsey Island / Ynys Enlli, Aberdaron, Gwynedd, Wales, UK, January

Graham Eaton / Split level image of Cwm Idwal and Llyn Idwal showing lake and mountain habitat and lacustrine algae, Snowdonia NP, North Wales, UK, January 2010. Winner of the Living Landscape: Connectivity categor...

David Woodfall / Upland conifer plantation in snow and mist, Gwynedd, North Wales, February 2009

Mike Potts / Atlantic salmon (Salmo salar) moving upriver to spawn. Lligwy River nr Betws y Coed, Gwynedd, North Wales, UK, November

Mike Potts / Atlantic salmon (Salmo salar) moving upriver to spawn. Lligwy River nr Betws y Coed, Gwynedd, North Wales, UK, November

Graham Eaton / Underneath the ice of Llyn Dinas lake, Snowdonia NP, Wales, December

Graham Eaton / Underneath the ice of Llyn Dinas lake, Snowdonia NP, Wales, December. Commended image in the LANDSCAPE PHOTOGRAPHER OF THE YEAR awards competition 2011

Graham Eaton / An underwater view of a mountain stream showing internal reflections on the water surface, Snowdonia NP, Gwynedd, Wales, UK, December 2009.

Mike Potts / Wild goats (Capra hircus) resting on coastal promontory, one yawning, Great Orme, Llandudno, Gwynedd, North Wales, UK, August

Guy Edwardes / Tre'r Ceiri Iron Age hill fort, Yr Eifl, looking towards the Menai Straits, Lleyn peninsula, Gwynedd, Wales, UK, December 2008

Guy Edwardes / Ice patterns on surface of frozen lake, Snowdonia National Park, Gwynedd, Wales, UK, December 2008

Mike Potts / Eurasian Widgeon (Anas penelope) flock take flight from grazing area, Llanfairfechan, Gwynedd, North Wales, UK February

Ross Hoddinott / Boathouses reflected in Llyn Dinas, Nant Gwynant, Gwynedd, North Wales. UK

Ross Hoddinott / Llyn Gwynant, Gwynedd, North Wales. UK

Tim Edwards / Lake Mymbyr in Snowdonia NP. Gwynedd, Wales. Views to the Snowdon Horseshoe.

Tim Edwards / Lake Mymbyr in Snowdonia NP. Gwynedd, Wales. Views to the Snowdon Horseshoe.

David Noton / Llyn Idwal, the Devil's Kitchen. Snowdonia, Wales, UK.

Tim Edwards / Southern Snowdonia NP, the river Mawddach in October, Wales.

Tim Edwards / Southern Snowdonia NP, the river Mawddach in October, Wales.

Geoff Simpson / Beach at low tide with shells and pebbles, Porth Dinllaen, Gwynedd, Wales, UK

David Noton / View from the summit of Cadair Idris, Snowdonia NP, Wales. Clouds and moutains.

David Noton / Llyn Idwal (The Devil's Kitchen) Snowdonia, Gwynedd, Wales.

David Noton / Mount Snowdon reflected in Llynnau Mymbyr, Snowdonia NP, UK

Tim Edwards / View from summit of Snowdon (1085m), Glaslyn and Llyn Llydaw. Snowdonia NP, Wales, UK, Europe

Alan Williams / Hawthorn (Crataegus monogyna) blossoming in carpet of Bluebell (Hyacinthoides non-scripta), hills in background, Aber Valley, Gwynedd, Wales, UK. May 2019.

Alan Williams / Rhaeadr-bach waterfall, Aber Valley, Snowdonia National Park, Wales, UK. May 2019.

Alan Williams / Bluebell (Hyacinthoides non-scripta) flowering on slopes of Aber Valley, Aber Falls in background. Snowdonia National Park, Wales, UK. May 2019.

Alan Williams / Mount Snowdon and derelict buildings of Britannia Copper Mine viewed across Llyn Llydaw. Snowdonia National Park, Gwynedd, Wales, UK. March 2018.

Alan Williams / View across Llyn Nantlie Uchaf to Mount Snowdon, Craig y Bera to left and Clogwyn y Barcut to right. Snowdonia National Park, Gwynedd, Wales, UK. February 2018.

Alan Williams / Mount Snowdon with Craig y Bera on left and Clogwyn y Barcut on right, view across Llyn Nantlie Uchaf. Snowdonia National Park, Gwynedd, Wales, UK. February 2018.

Alan Williams / Frozen Llyn Teyrn with Moel Siabod, Conwy in background, view east from Miner's Track. Snowdonia National Park, Gwynedd, Wales, UK. March 2018.

Alan Williams / The Pinnacles above Capel Curig, view into valley and Llynnau Mymbyr, Conwy. Snowdon Range, Gwynedd in background. Snowdonia National Park, Wales, UK. March 2018.

Alan Williams / Llyn Ogwen with view to Y Garn on left and Foel Goch to right, Gwynedd. Snowdonia National Park, Wales, UK. March 2018.

Alan Williams / Partially frozen Llyn Ogwen, looking west to Y Garn on left and Foel Goch on right. Snowdonia National Park, Gwynedd, Wales, UK. March 2018.

Alan Williams / Ice formations on banks of Llyn Gwynant, view west to Yr Aran. Snowdonia National Park, Gwynedd, Wales, UK. March 2018.

Alan Williams / Slate fence in Cwm Croesor with Cnicht Mountain in background. Snowdonia National Park, Gwynedd, Wales, UK. March 2018.

Alan Williams / Snowdon Horseshoe ridge reflected in partially frozen Llyn Llydaw. Mount Snowdon on right and Y Lliwedd on left. Snowdonia National Park, Gwynedd, Wales, UK. March 2018.

Alan Williams / Crib Goch and Mount Snowdon reflected in partially frozen Llyn Llydaw. Snowdonia National Park, Gwynedd, North Wales, UK. March 2018.

Alan Williams / Mount Snowdon and derelict buildings of Britannia Copper Mine reflected in Llyn Llydaw. Snowdonia National Park, Gwynedd, Wales UK. March 2018.

Alan Williams / Mount Snowdon and derelict buildings of Britannia Copper Mine reflected in Llyn Llydaw. Snowdonia National Park, Gwynedd, Wales UK. March 2018.

Alan Williams / Frozen Llyn Teyrn with Y Llewydd and Mount Snowdon in background. View west from Miner's Track. Snowdonia National Park, Gwynedd, Wales, UK. March 2018.

Alan Williams / Mount Snowdon and derelict buildings of Britannia Copper Mine reflected in Llyn Llydaw. Snowdonia National Park, Gwynedd, Wales UK. March 2018.

Guy Edwardes / Harlech Castle, Gwynedd, Wales, UK, August 2005.

Guy Edwardes / Farmland with Heather (Erica sp) Lleyn peninsula,, Gwynedd, Wales, UK, August 2005.

Guy Edwardes / Capel Curig in winter, Snowdonia, Wales, UK, March 2006.

Guy Edwardes / Harlech Castle, Gwynedd, Wales, UK, December 2008.

Guy Edwardes / Cregennan Lake near Dolgellau, Snowdonia, Wales, UK. February 2006

Guy Edwardes / Mawddach estuary at Barmouth, Snowdonia, Wales, UK. February 2006

Alan Williams / Idwal Falls on path from Idwal Cottage, Llyn Ogwen to Llyn Idwall, summit of Y Garn in background. Snowdonia National Park, North Wales, UK. February 2017.

Graham Eaton / Pre-Cambrian Gwna Melenge exposed near Aberdaron. Blocks of limestone in caught up in a subduction zone, formed at an ancient plate bounday, the Iapetus suture. Wales, UK, November 2012.

Graham Eaton / A sand-spit developing at the mouth of the River Soch at Abersoch, Gwynedd, Wales, UK, April

Graham Eaton / Aerial view of surfer walking on beach towards the sea, Abersoch, Gwynedd, Wales, UK, May

Graham Eaton / Aerial view of a walker on beach, Abersoch, Gwynedd, Wales, UK, May

Mike Potts / Guillemots (Uria aalge) pair protecting young on water. Leyn Peninsula, Gwynedd, North Wales, UK, July.

Mike Potts / Guillemots (Uria aalge) groups of adults on sea protectively surrounding young from attack by Greater black backed gulls (Larus marinus) off Leyn Peninsula, Gwynedd, North Wales, UK, July.

Mike Potts / Guillemot (Uria aalge) in flight over the sea, off Leyn Peninsula. Gwynedd, North Wales, UK, July.

Mike Potts / Manx Shearwater (Puffinus puffinus) in flight, off Leyn Peninsula. Gwynedd, North Wales, UK, July.

Mike Potts / Manx Shearwater (Puffinus puffinus) in flight, off Leyn Peninsula. Gwynedd, North Wales, UK, July.

Mike Potts / Manx Shearwater (Puffinus puffinus) in flight, off Leyn Peninsula. Gwynedd, North Wales, UK, July.

Mike Potts / Manx Shearwater (Puffinus puffinus) preening on sea, off Leyn Peninsula, Gwynedd, North Wales, UK, July.

Graham Eaton / Sea cliffs, geological section through Cambrian and Ordovician sedimentary rocks with faulted monocline fold structure. Rocks include Nant-pig Musdstones, Abersoch, Gwynedd, Wales, UK

Graham Eaton / Cilan Headland, a headland of folded and tilted Cambrian and Ordovician age sedimentary rocks, Abersoch, Gwynedd, Wales, UK, August 2016.

Graham Eaton / Abandoned trolley in an adit at Cwmorthin Slate Mine, Tanygrisiau, Tanygrisiau, Gwynedd, Wales, UK, October 2016.

Graham Eaton / Abandoned mine buildings and slate waste with tree beside wall in foreground, Cwmorthin, Blaenau Ffestiniog, Wales, UK, October 2016.

Graham Eaton / Abandoned mine buildings and slate waste, Cwmorthin, Blaenau Ffestiniog, Wales, UK, October 2016.

Graham Eaton / Angler fishing at dusk in sea surf. Bass (Dicentrarchus labrax) are often caught as they hunt for food churned up by waves, Porth Ceiriad, Pwllheli, Gwynedd, Wales, UK, December 2016.

Graham Eaton / Angler fishing at dusk in sea surf. Bass (Dicentrarchus labrax) are often caught as they hunt for food churned up by waves, Porth Ceiriad, Pwllheli, Gwynedd, Wales, UK, December 2016.

Graham Eaton / Beach with mist during warm spell, Hells Mouth, Porth Neigwl, Abersoch, Gwynedd, Wales, UK, July 2016.

Graham Eaton / Llandecwyn Chapel overlooking saltmarsh and River Glaslyn estuary as it enters Cardigan Bay, Porthmadog, Gwynedd, Wales, UK, October 2016.

Graham Eaton / Sea mist along coast, Porth Ceiriad, Pwllheli, Gwynedd, Wales, UK, December 2016.

Graham Eaton / Aerial view of saltmarsh with small meandering drainage tributaries. River Dwyryd estuary and village of Portmeirion in background, Glastraeth, Talsarnau, Gwynedd, Wales, UK, October 2016.

Graham Eaton / Aerial view of saltmarsh with small meandering drainage tributaries. River Dwyryd estuary, village of Portmeirion and Snowdonia in background, Glastraeth, Talsarnau, Gwynedd, Wales, UK, October 2016.

David Noton / Dolgoch Falls, Gwynedd, Wales, UK, May.

Alan Williams / Aber Falls (Rhaeadr-fawr) near Abergwyngregyn, Gwynedd, North Wales, UK, October 2016.

Alan Williams / Aber Falls (Rhaeadr-fawr) showing the footbridge for the North Wales Path over the stream below the falls near Abergwyngregyn, Gwynedd, North Wales, UK, November 2016.

Alan Williams / Aber Falls (Rhaeadr-fawr) near Abergwyngregyn Gwynedd North Wales, UK, November 2016.

Alan Williams / Aber Falls (Rhaeadr-fawr) near Abergwyngregyn Gwynedd North Wales, UK, November 2016.

Graham Eaton / Abersoch harbour in mist with boats, Gwynedd, Wales, UK June. Abersoch means 'mouth of the river Soch'.