Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Photomicrograph of rotifer, probably Rotaria rotatoria. Rapidly rotating cilia at top of head, internal organs visible. Green circles are algae. Live specimen. Original image at 40X, wet mount, transmitted brightfield illumination. Indistinct image due to motion blur of live specimen and very shallow depth of field of brightfield illumination.
centropyxis aculeata (amoeboid organism) under the microscope - optical microscope x400 magnification
Bitola, Macedonia - September 5, 2015: People visit the the Monastir Military High School, it was established in 1847, was one of the three-year educational military high schools of the Ottoman Empire. It was located in Monastir (present day Bitola, Republic of Macedonia). The buildings of the school have been used museums since 1934 (today NI Institute and Museum Bitola).
Concealer moth, Denisia resting on bark, macro photo with high magnification.
Appearance:\nIt has a rusty orange colour to the wings, upper body and the tips of the antennae. The body is silvery white below and it has a wingspan of 25–30 mm. This butterfly is very similar in appearance to the Essex skipper (Thymelicus lineola). In the small skipper, the undersides of the tips of the antennae are yellow orange, whereas they are black in the Essex skipper. The black area on the lower edge of the upper wings also differs. Like the other orange grass skippers the male has a distinctive black stripe made up of scent scales.\n\nLife cycle and food plants:\nEggs are laid loosely inside grass sheaths of the caterpillars food plants from July to August. The newly hatched caterpillars eat their own eggshell before entering hibernation individually in a protective cocoon of a grass sheath sealed with silk. In the spring the caterpillar begins feeding. The favoured food plant is Yorkshire fog (Holcus lanatus), although other recorded food plants include timothy (Phleum pratense), creeping soft grass (Holcus mollis), false brome (Brachypodium sylvaticum), meadow foxtail (Alopecurus pratensis) and cock's foot (Dactylis glomerata). The caterpillars pupate near the base of the food plant in June with the first adults on the wing at the end of June, a week or two before the first Essex skippers. They are strongly attracted to purple flowers such as thistles and knapweeds.\n\nDistribution:\nThis butterfly's range includes much of Europe (east to the Urals, including Ireland, Britain and Scandinavia, and includes north Africa and the Middle East. It is typically occurring where grass has grown tall.\n\nThis Picture is made during a Long Weekend in the South of Belgium in June 2019.
Planarian parasite (flatworm) under microscope view.
Raw mackerel stuffed with lemon and spices on a white background.
Blooming chestnut tree
Historic houses at Graden by Stephansplatz in Vienna old city, Austria in Austria, Vienna, Vienna
Evergreen shrub, Hebe, with blooming flowers in Pembrokeshire, Wales.
Algaes under microscopic view
Many of the lakes in Northern Arizona are ephemeral bodies of water.  This means that during dry spells these lakes are completely empty of water and often turn into meadows of grasses and wildflowers.  This picture of Rogers Lake shows abundant water after an unusually heavy spring runoff.  Rogers Lake is west of Flagstaff, Arizona, USA.
Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.
White rocks and clear blue water. Empty beach in Gelendzhik, Russia
Egg of intestinal fluke in human stool, analyze by microscope, original magnification 400x
Pyrgus malvae, the grizzled skipper, is a butterfly species from the family Hesperiidae. It is a small skipper (butterfly) with a chequered pattern on its wings that appears to be black and white. This butterfly can be found throughout Europe and is common in central and southern regions of England. The butterfly prefers three major types of habitat: woodland, grassland, and industrial. Eggs are laid on plants that will provide warmth and proper nutrition for development, such as A. euphoria. As larvae, their movement is usually restricted to a single plant, on which they will build tents, unless they move onto a second host plant. Larvae then spin cocoons, usually on the last host plant they have occupied, where they remain until spring. Upon emerging as adult butterflies, grizzled skippers are quite active during the day and tend to favour blue or violet-coloured plants for food. They also possess multiple methods of communication; for example, vibrations are used to communicate with ants, and chemical secretions play a role in mating. Exhibiting territorial behaviour, males apply perching and patrolling strategies to mate with a desired female.\nHabitat: \nAlthough grizzled skippers occupy three major forms of habitats, they tend to settle in environments with spring nectar plants, larval food plants (agrimony, creeping cinquefoil, wild strawberry, tormentil), ranker vegetation, and edges with scrub or woodland. Host plants are from the family Rosaceae with a focus on Agrimonia eupatoria as well as Potentilla. \nFlight Season: \nGrizzled skippers produce one brood per season and are in flight from the middle of March to the middle of July. \n\nThis Picture is made during a Vacation in Bulgaria in May 2018.
Fresh linden flowers and leaves isolated on white background
View of the Ruhr dams from behind the trees and branches with very low water level
Linden flowers or lime tree flowers isolated on white background.
Mandarinfish in Blue Plate on White Background
loosestrife flower isolated on white background
Photomicrograph of a freshwater clustering single-celled green algae,
Microscopic photo of a thin section of calcareous tufa of Holocene age.
Arizona doesn't have many natural ponds and lakes. To provide water for their livestock, early ranchers dug stock tanks in the national forest open range. Now that the national forests are used for recreation these old tanks provide ideal habitat for wildlife as well as popular destinations for hiking. This unnamed tank has filled up from the monsoon rainfalls. It is located at the base of Campbell Mesa in Coconino National Forest, Arizona, USA.
Flower of hogweed along roadside during flowering phase
plant Zea Stem C.S. under light mircoscope with white background
Cross-section leaf Plant of under the microscope for classroom education.
A serene turquoise alpine lake is nestled between lush green slopes adorned with pink wildflowers, creating a tranquil and vibrant landscape in nature.
Leiden leaf c.s. under microscope
Garden in Vietnam: largeTristellateia plant in full bloom is standing in front of a tree trunk.  In the family of  Malpighiales. \nFull name: Tristellateia Australasiae
Free Images: "bestof:Angstromslaboratoriet from side.JPG en Ångströmlaboratoriet from side sv Ångströmlaboratoriet sett från vänster sidasidan own Tompen0000 080607"
Pieter_Brueghel_the_Elder_-_The_Dutch_Proverbs_-_Google_Art_Project.jpg
Guichets Louvre Bateau Mouche.jpg
L'Histoire backside Carrousel.jpg
L'Histoire pigeon Carrousel.jpg
MC255-2.jpg
Side entrance cathedral Bayeux.jpg
SeagullCork2009.jpg
Temple of Jupiter side view Pompeii.jpg
Erechtheum Acropolis Athens.jpg
Sceloporus variabilis marmoratus side.JPG
Acinonyx jubatus (1).jpg
Acinonyx jubatus (2).jpg
Triumph Tiger 800 MY 2012 side view.jpg
Teatro Municipal Side in São Paulo City cropped version.jpg
Temple of Athena Nike side view, Athens, Greece.jpg
A-narrowgauge-train-of-Cierny-Hron-Railway.jpg
Entrée latérale Sorbonne.jpg
Side altar Peterskirche Munich.jpg
Side door Patio de los Arrayanes, Alhambra, Granada, Andalusia, Spain.jpg
Wasserbillig Luxembourg.JPG
Municipal-theater-of-Sao-Paulo.jpg
Beach house at Misquamicut Beach, Rhode Island.JPG
Side door, Torre de l'Homenaje, Alcazaba, Almeria, Spain.jpg
Moscow_July_2011-48.jpg
Lateral door church Theotokos Gorgoepikoos Athens, Greece.jpg
Parthenon east side Acropolis Athens, Greece.jpg
Nyhavn facades Copenhagen Denmark.jpg
Idrottsparken 2010 bild 06.JPG
Idrottsparken 2010 bild 07.JPG
Grifola frondosa 2014 G2.jpg
1962 Rambler Ambassador 2-door sedan Kenosha blue-s.jpg
Hercules fresco Oplontis.jpg
Agii Apostoli church back agora athens.jpg
Temple of Athena Nike from below Athens.jpg
Boston Financial District skyline.jpg
Haikou New Port various boats and ships 13.jpg
Diemelsee, Südseite Staumauer.jpg
Karsoy and Trud 2010 G2.jpg
Duomo coté droit cathédrale.jpg
Château Saint-Ange, Rome, Italie.jpg
Printenmann, Weihnachtsmarkt, Aix-la-Chapelle, Allemagne.jpg
Stone bull's head rhyton archmus Heraklion.jpg
Sankt Knud cathedral side view Odense Denmark.jpg
Tomb Queen Margarita I side view Roskilde cathedral Denmark.jpg
Barn-Floberget-19thCent.JPG
Neris River in Vilnius at Green Bridge.JPG
Lakshmi-Narayan-Temple-in-Kathmandu-Nepal.jpg
Rothenburg BW 4.JPG
Poppy from above.JPG
Hôtel de Salm côté Seine Palais Légion d'Honneur Paris.jpg
Sunset over St. Andrews Bay.jpg
Kuhmöser von Süden.jpg
Palacio de Bibataubin detail left facade Granada Spain.jpg
Palacio de Bibataubin detail right facade Granada Spain.jpg
La Peña Vieja de Arcos de la Frontera.JPG
Trier Porta Nigra BW 3.JPG
Birdwatching in sunrise, south cape of Landsort-1.JPG
Tian Tan Buddha 22.jpg
MTZ-80 tractor 2011 G1.jpg
MTZ-80 tractor 2011 G2.jpg
MTZ-80 tractor 2011 G3.jpg
ENSP Bâtiment principal.jpg
Berlin of Popes Pius IX and Pius X Vatican 15.jpg
Mosaic Madonna and Child pediment side entrance Church Santa Maria in Aracoeli, Rome, Italy.jpg
Buda Tian Tan on Hong Kong.jpg
House in Honey Creek Swiss Historic District.jpg
Detail Erechtheum Acropolis Athens.jpg
Falköping Västergötland Sweden from Mösseberg viewing tower.JPG
Lampadaire ronde des Amours Gauquié Pont Alexandre III Paris.jpg
Columns, Erechtheum, Acropolis, Athens, Greece.jpg
Top erechtheum Acropolis Athens.jpg
East London RM2050 on 15(H).JPG
2007 Matterhorn.jpg
Sestertius Hadrianus Roma Victory Cornucopia.jpg
Partie centrale façade château Schönbrunn côté Jardins lumière soir hiver.jpg
Door patio de los arrayanes Alhambra Granada Spain.jpg
Erechtheum north east view, Acropolis, Athens, Greece.jpg
Erechtheum Acropolis Athens evening moon.jpg
ENSP bâtiment principal.jpg
Erechtheum east contre-jour Acropolis, Athens, Greece.jpg
Chlosyne lacinia.jpg
Chapelle Saint-Martin Dordogne 1.jpg
Sarcophagus archmus Heraklion.jpg
Jaguar D-type Paris 2010.jpg
Carlo Goldoni buste neige.jpg
Jaguar D-type Paris 2010 (cropped).jpg
Groene rups 4-5cm.jpg
1962 Rambler Ambassador 2-door sedan Kenosha blue-r.jpg
1962 Rambler Ambassador 2-door sedan Kenosha blue-f.jpg
Death_of_Mary,_Joos_van_Cleve_the_Elder,_W.A.F._150,_151,_152,_Alte_Pinakothek_Munich.jpg
Royal White Bengal Tiger walking profile at Cougar Mountain Zoological Park.jpg
West Palm Beach station Amtrak train arriving north view.jpg
Colosseum ovale sous-sol Rome Italy.jpg
Jerusalem Oesterreichisches Hospiz.JPG
Philia Hellenic Center for Marine Research Heraklion harbour.jpg
Retablo virgen mareantes 1 Alcazar Seville Spain.jpg
Groene rups 4-5cm opgerold.jpg
Roland_Garros.jpg
Danaë and the Shower of Gold (Adolf Ulrik Wertmüller) - Nationalmuseum - 18771.tif.tiff
Double fold seen from the side.svg
Terms of Use   Search of the Day