Old town illuminated by sun rays that filters between clouds, Monopoli, Apulia, Italy, Europe

Alcantara gorge, Castiglione di Sicilia, Sicily, Italy, Mediterranean, Europe

Giant sponge showing how it filters water with the use of dye, Dominica, West Indies, Caribbean, Central America

Moose (Alces alces) cow in pond breaks from filter feeding and stares at camera, Grand Teton National Park, Wyoming, United States of America, North America

Giant sponge showing how it filters water with the use of dye, Dominica, West Indies, Caribbean, Central America

Giant sponge showing how it filters water with the use of dye, Dominica, West Indies, Caribbean, Central America

Giant sponge showing how it filters water with the use of dye, Dominica, West Indies, Caribbean, Central America

Whale shark (Rhincodon typus,) filter feeding underwater off El Mogote, near La Paz, Baja California Sur, Mexico, North America

Sun rays filter between fog in autumn, Soglio, Bregaglia valley, Graubunden, Switzerland, Europe

A pair of colorful tunicates grows on a reef in Lembeh Strait, Indonesia. This is a filter-feeding organism.

Sunlight filters into the shadows of a thick mangrove forest in Komodo National Park, Indonesia. This tropical area in the Lesser Sunda Islands is known for both its amazing marine biodiversity as well its infamous dragons.

Whale shark (Rhincodon typus), filter feeding underwater off El Mogote, near La Paz, Baja California Sur, Mexico, North America

Sun rays filter between stormy clouds during sunset with Sassolungo group in the foreground, Fassa Valley, Trentino, Dolomites, Italy, Europe

Young whale shark (Rhincodon typus), filter feeding near snorkeler at El Mogote, Baja California Sur, Mexico, North America

Sun rays filter between black clouds at sunset, Stelvio Mountain pass, Stelvio National Park, Valtellina, Lombardy, Italy, Europe

Young whale shark (Rhincodon typus), filter feeding near the surface at El Mogote, Baja California Sur, Mexico, North America

Young whale shark (Rhincodon typus), filter feeding near snorkeler at El Mogote, Baja California Sur, Mexico, North America

Young whale shark (Rhincodon typus), filter feeding near the surface at El Mogote, Baja California Sur, Mexico, North America

Whale shark (Rhincodon typus), filter feeding underwater off El Mogote, near La Paz, Baja California Sur, Mexico, North America

Sun filters between clouds at sunrise with illuminated pasture, Valmalenco, Valtellina, Lombardy, Italy, Europe

Man at sunset with graduated photography filters in his hand, San Marco Pass, Orobie Alps, Bergamo province, Lombardy, Italy, Europe

Yellow cake, powdery uranium oxide in Burwell filter press, Uranium City, Saskatchewan, Canada, North America

An employee at Gitton Pere et Fils filters wine, Sancerre, Cher, Centre, France, Europe

Chef prepares Peking duck in Quanjude Roast Duck restaurant, Wangfujing Street, Beijing, China

Diffuser filter used on shot of Wimbledon crowd in the rain, London, England, United Kingdom, Europe

Aerial view of feeding humpback Whales (Megaptera novaeangliae) surfacing off Whitestone Harbor in Southeast Alaska, USA. Pacific Ocean.

Basking shark feeding at surface in tide line, close to plastic bag (Cetorhinus maximus) Hebrides, Scotland (RR)

Basking Shark (Cetorhinus Maximus) feeding. Cornwall, UK, Atlantic Ocean. (RR)

Basking shark feeding at surface in tide line with mouth open (Cetorhinus maximus) Hebrides, Scotland (RR)

Aerial view of adult humpback whales (Megaptera novaeangliae) preparing to dive in order to cooperatively "bubble-net" feed in Southeast Alaska, USA

Aerial view of adult humpback whales (Megaptera novaeangliae) preparing to dive in order to cooperatively "bubble-net" feed in Southeast Alaska, USA

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding near small whale watching boat in Stephen's Passage, Southeast Alaska, USA. Pacific Ocean.

Scallop showing eyes along rim of mantle. UK (RR)

Basking Shark (Cetorhinus maximus). Cornwall, UK.

Humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in front of Mendenhall Glacier in Stephen's Passage, Southeast Alaska, USA. Pacific Ocean.

Humpback Whales (Megaptera novaeangliae) co-operatively bubble-net feeding near small whale watching boat in Stephen's Passage, Southeast Alaska, USA. Pacific Ocean.

Tubeworm with feathery filter system in use. UK (RR)

Tubeworm with feathery filter system in use. UK (RR)

Tubeworm with feathery filter system in use. UK (RR)

Close up of pour-over coffee maker

Caucasian man pouring breakfast coffee

Caucasian man pouring breakfast coffee

NGC 7000, the North America Nebula, with the Pelican Nebula, IC 5067, at right, in Cygnus, taken from home November 21, 2016 as part of testing of the Explore Scientific FCD100 102mm apo refractor. This is a stack of 5 x 6-minute exposures at f/7 with the ES field flattener, and at ISO 1600 with the filter-modified Canon 5D MkII. Star diffraction spikes added with AstronomyTools actions.

The partial eclipse of the Sun, October 23, 2014, as seen from Jasper, Alberta, in this case shot through thin cloud but that makes for a more interesting photo than one in a clear sky. This is still shot through a mylar filter, on the front of a 66mm f/6 apo refractor using the Canon 60Da for 1/25 sec exposure at ISO 100. The colours are natural, with the mylar filter providing a neutral 'white light' image. With the Sun dimmed a lot by cloud, the longer exposure allowed picking up light and colours in the surrounding clouds.

The partial eclipse of the Sun, October 23, 2014, as seen from Jasper, Alberta, shot under clear skies through a mylar filter, on the front of a 66mm f/6 apo refractor using the Canon 60Da for 1/8000 (!) sec exposure at ISO 100. The colours are natural, with the mylar filter providing a neutral 'white light' image. The big sunspot on the Sun that day is just disappearing behind the Moon's limb. The mylar filter gave a white Sun, its natural colour, but I have tinted the Sun's disk yellow for a more pleasing view that is not just white Sun/black sky.

This is the nebula rich region in the constellation of Monoceros the Unicorn with the dark Cone Nebula (left of centre) and the small V-shaped and bright Hubble's Variable Nebula at bottom, a reflection nebula that varies in form and brightness. Above the Cone Nebula is the triangular Christmas Tree Cluster, NGC 2264, here upside down as the bright blue star 15 Mon is the base of the tree. The large region of nebulosity is Sharpless 2-273. The V-shaped dark nebula above centre is LDN 1603.

Manta ray, Manta birostris, feeding at night, Kailua-Kona, Big Island, Hawaii

Transit of Venus, June 8, 2004, from Luxor, Egypt. A composite image (layered in Photoshop) of individual multiple shots taken from just after 2nd contact to just before 3rd contact. Taken with a Sony DSC-V1 digital camera shooting afocally through a 40mm eyepiece and on a 90mm apochromatic refractor, equatorially mounted and driven. Shot thru a Baader solar filter, which gives a white Sun. Yellow coloration added in Photoshop.

Nebulosity in the heart of Cygnus the Swan, including the North America Nebula and Pelican Nebula at left (NGC 7000 and IC 5070) and Gamma Cygni complex at right (IC 1318). The Crescent Nebula (NGC 6888) is at lower right. This is a stack of 5 x 4 minute exposures at f/2 with the 135mm lens and modified Canon 5D MkII at ISO 800, plus another three similar exposure images but taken thru the Kenko Softon filter for the star glows. Taken from home Sept 10, 2013.

This is the Belt of Orion with its three blue stars across the top of the frame (L to R: Alnitak, Alnilam, and Mintaka), with the iconic Horsehead Nebula (aka B33) below Alnitak, with the dark Horsehead set against the bright nebula IC 434, aka Orion's Dagger. The pinkish nebula above Alnitak is NGC 2024, the Flame Nebula. The small blue reflection nebula left of the Horsehead is NGC 2023, with smaller IC 435 to the left of it. The field is filled with the large open cluster Collinder 70. The multiple star at bottom left of centre is Sigma Orionis. Many other smaller bits of reflection nebulas populate the field in and around the Belt.

The partial solar eclipse of October 23, 2014 as seen from Jasper, Alberta, at a public event in Centennial Park as part of the annual Dark Sky Festival. This is a single-exposure image showing the scene near mid-eclipse with telescopes from volunteers from the Royal Astronomical Society of Canada, and the mostly clear skies above with the crescent Sun visible through the handheld polymer solar filter.

This is the central area of Cygnus and its bright Milky Way starcloud surrounded by red nebulosity. At left is the star Sadr (gamma Cygni) with the complex of nebulosity catalogued as IC 1318. At centre is the distinct Crescent Nebula, NGC 6888, a expanding nebula created by winds from a hot Wolf-Rayet star. At bottom left is the star cluster Messier 29, though looking a little lost in the rich starfields here. At top is the cluster IC 1311, looking more obvious than M29 but not observed visually and included in the NGC catalog. Odd. At far right are the large and loose star clusters NGC 6883 and NGC 6871, the latter an obvious binocular sight. To the left of Sadr is the small cluster NGC 6910. The dark nebulas B145 and LDN 862 are at right. The small emission nebula at bottom is Sharpless 2-104.

Gum Nebula area of Vela and Puppis. Taken from Atacama Lodge, Chile, March 19, 2010, with modified Canon 5D MkII and Sigma 50mm lens at f/4, for stack of 10 x 6 minute exposures (Mean combined) at ISO 800 plus 2 x 6 minutes with Kenko Softon filter. High contrast boost and Selective Colour adjustments to bring out nebulocity while retaining neutral sky.

Split shot of a Basking Shark (Cetorinus Maximus) in Gunna Sound, Isle of Colll, Scotland. It's mouth is gaping as it feeds. Clouds are lit with the setting sun in the background.

Transit of Venus, June 8, 2004, from Luxor, Egypt. A single image taken near mid-transit. Taken with a Sony DSC-V1 digital camera shooting afocally through a 40mm eyepiece and on a 90mm apochromatic refractor, equatorially mounted and driven. Shot thru a Baader solar filter, which gives a white Sun. Yellow coloration added in Photoshop.

The Carina Nebula (aka Eta Carinae) in the southern sky, shot December 11, 2012 from Timor Cottage, Coonabarabran, NSW, Australia. This is a stack of 5 x 12 minute exposures at ISO 400 with the Canon 5D MkII (filter modified) and Astro-Physics 105mm Traveler apo refractor and 6x7 field flattener.

Crime Scene Investigation

Crime Scene Investigation

Shirataniunsuikyo, Yakushima, Kagoshima, Japan

Sunburst Clouds

Sicklefin Mobula, Mobula tarapacana, Azores, Princess Alice Bank, Atlantic Ocean, Portugal

Sicklefin Mobulas, Mobula tarapacana, Azores, Princess Alice Bank, Atlantic Ocean, Portugal

Sicklefin Mobula, Mobula tarapacana, Azores, Princess Alice Bank, Atlantic Ocean, Portugal

Aerial view of a fossil-fuel power station with cooling towers, Buschhaus Power station, Helmstedt, Lower Saxony, northern Germany

Sign, particulate filer, For the sake of the environment, this vehicle is equipped with a particle filter

Ashtrays

Aerial picture, Waterworks Essen, water filter, Ruhr, Ueberruhr with Ueberruhr-Island, Essen, Ruhr area, North Rhine-Westphalia, Germany, Europe

Tea being poured, tea room, Muzaffaragarh, Punjab, Pakistan, Asia

Male hiker filters water on a cliff-pinched patio near Deer Creek Falls in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Male hiker filters water on a cliff-pinched patio near Deer Creek Falls in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Male hiker filters water on a cliff-pinched patio near Deer Creek Falls in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Young couple standing at the back of their packed vehicle with back door open and the young man in using his cell phone while the young woman waits impatiently, Edmonton, Alberta, Canada

Two sisters hugging each other in a city park on a warm autumn day: Edmonton, Alberta, Canada

Outdoor portrait of a mother spending quality time with her son who has Down Syndrome in a city park during an bright sunny autumn day, Leduc, Alberta, Canada

Two sisters hugging each other in a city park on a warm autumn day: Edmonton, Alberta, Canada

A young mother taking a self-portrait with her kids in a park with the image having a vintage effect applied, Edmonton, Alberta, Canada

A young girl posing for the camera while standing on a bouncing balance beam in a playground on a warm autumn evening at sunset, Edmonton, Alberta, Canada

A young mom and her daughter playing on a saucer swing in a playground on a warm autumn evening, Edmonton, Alberta, Canada

Toddler Making Funny Faces At The Camera And Putting His Fingers in His Mouth, Langley, British Columbia, Canada

A beautiful mom and her two little daughers walking their Great Dane through the woods in a city park on a warm fall evening, Edmonton, Alberta, Canada

A Young Asian Couple Kissing In A Park In Autumn And Making A Heart With Their Hands In The Warmth Of The Setting Sun, Edmonton, Alberta, Canada

A Young Couple Embracing Each Other And Looking Into Each Other's Eyes On A Bridge In A City Park In Autumn, Edmonton, Alberta, Canada

Travelers pull up alongside a lake in Bratislava to free camp for the night. A view from the bed in the back of the camper van; Bratislava, Bratislava Region, Slovakia

Close-up of millennial couple kissing on Lanikai Beach; Lanikai, Oahu, Hawaii, USA

Millennial couple kissing on Lanikai Beach with the Mokes Islands in the background; Lanikai, Oahu, Hawaii, USA

Mother spending quality time with her son who has Down Syndrome in a city park during an bright sunny autumn day, Leduc, Alberta, Canada

Outdoor family portrait in a city park on a warm fall afternoon and the youngest son has Down syndrome, Leduc, Alberta, Canada

A Millennial couple walking along Lanikai Beach with Mokapu Point and the Moku Manu Islands in the background; Lanikai, Oahu, Hawaii, USA

Millennial couple kissing on Lanikai Beach with the Mokes Islands in the background; Lanikai, Oahu, Hawaii, USA

Four female golfers posing for a social media portrait on a golf course with a vintage style filter applied to the image, Edmonton, Alberta, Canada

A Young Asian Couple Holding Hands While Walking Through A Park In Autumn And Enjoying The Warmth Of The Sunlight During The Early Evening, Edmonton, Alberta, Canada

Millennial couple kissing on Lanikai Beach with the Mokes Islands in the background; Lanikai, Oahu, Hawaii, USA

A young mom and her daughter playing on a saucer swing in a playground on a warm autumn evening, Edmonton, Alberta, Canada

Two Sisters Having Fun Outdoors And Singing Together In A City Park While Listening To Music On An Mp-3 Player, Edmonton, Alberta, Canada

A Young Couple Holding Each Other Closely And Kissing In A City Park In Autumn, Edmonton, Alberta, Canada

Mount Shuksan and Clouds, Washington, USA

Young Girl Trying To Drill A Hole In The Ice Of Frozen Lake Wabamun Without Any Success: Wabamun, Alberta, Canada

A Young Couple Running On A Bridge In A City Park In Autumn, Edmonton, Alberta, Canada

A young woman with long blond hair twirls and runs freely in a grass field in a park at sunset, Edmonton, Alberta, Canada

Young Woman With Long Hair Listening To Music Outdoors On Her Smart Phone In A City Park In Autumn, Edmonton, Alberta, Canada