Visuals Unlimited / Close up of proboscis of Fruit fly (Drosophila sp) SEM X350

Visuals Unlimited / Negative stain electron micrograph of the Swine Influenza Virus. TEM X29,800

Visuals Unlimited / Grass pollen. SEM X3800 at 4 x 4

Visuals Unlimited / H1N1 Influenza Virus or Swine Flu Virus. A member of the taxonomic family Orthomyxoviridae, the influenza virus is a single-stranded RNA organism.

Visuals Unlimited / H1N1 Influenza Virus or Swine Flu Virus. A member of the taxonomic family Orthomyxoviridae, the influenza virus is a single-stranded RNA organism.

Visuals Unlimited / Close up of a Fruit Fly (Drosphila) compound eye. SEM X2500

Visuals Unlimited / Micrococcus Bacteria on agar. Micrococcus is a gram-positive, aerobic prokaryote that is relatively harmless to humans. It forms either pairs or, as seen here, clusters. SEM X21,000

Doug Perrine / Young Sperm whale calf (Physeter macrocephalus) Endangered, Kona, Hawaii, Central Pacific Ocean digitally manipulated

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) male giving birth - expelling fry from pouch - young fry then float to the water's surface; captive, digitally manipulated

Tony Heald / RF- Common zebra foal running (Equus quagga). Etosha National Park, Namibia. Digitally enhanced. (This image may be licensed either as rights managed or royalty free.)

Suzi Eszterhas / North American beaver (Castor canadensis), orphaned kit swimming in sink. Lindsay Wildlife Experience, Walnut Creek, Contra Costa County, California, USA. September 2015. Captive. Digitally enhanced.

Tony Heald / African elephant (Loxodonta africana) South Luangwa NP. Zambia. Digitally enhanced.

Mark Taylor / Black-and-white kitten standing, against white background DIGITALLY ENHANCED

Wild Wonders of Europe / Lundgren / Pool Frog (Pelophylax lessonae) split level view, near Crisan village, Danube Delta, Romania, June. Highly commended in the Underwater Category of the GDT Awards Competition 2016.

Bertie Gregory / Vancouver island black bear (Ursus americanus vancouveri) investigating remote camera, Vancouver Island, British Columbia, Canada, August.

John Downer / Lion cub (Panthera Leo) resting, fisheye shot Masai Mara, Kenya, Africa. Taken on location for 'Pride' tv series.

Ernie Janes / RF- Beech avenue at dusk. Norfolk, UK, early November. Digital composite. (This image may be licensed either as rights managed or royalty free.)

Kim Taylor / RF- Seven-spot Ladybird (Coccinella septempunctata) on Bramble flower, digitally enhanced. Surrey, UK. (This image may be licensed either as rights managed or royalty free.)

Doug Perrine / Young Sperm whale calf (Physeter macrocephalus) Endangered, Kona, Hawaii, Central Pacific Ocean digitally manipulated

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) male giving birth - expelling fry from pouch - young fry then float to the water's surface, captive, digitally manipulated

Doug Perrine / Northern / lined / Atlantic seahorse (Hippocampus erectus) young fry moments after birth ie after being expelled from father's brood pouch, as they float just below the water's surface (captive) Digit...

Kim Taylor / RF- Dandelion (Taraxacum officinale) flower and seeds blowing in the wind (digitally enhanced). UK. (This image may be licensed either as rights managed or royalty free.)

Kim Taylor / RF- Grey Wolf (Canis lupus) howling at sunset (digitally enhanced). (This image may be licensed either as rights managed or royalty free.)

Kim Taylor / RF- Barn owl (Tyto alba) landing on fence post at dawn. Digitally enhanced, Captive, UK. (This image may be licensed either as rights managed or royalty free.)

Visuals Unlimited / Bacteria, Pseudomonas fluorescens, SEM X26,000 at 4-x4-

Visuals Unlimited / Staphylococcus aureus bacteria, the cause of a wide variety of human infections as well as a common cause of food poisoning. SEM X9,000 at 4- x 4-

Visuals Unlimited / Staphylococcus aureus bacteria, the cause of a wide variety of human infections as well as a common cause of food poisoning. SEM X14,000 at 4- x 4-

Visuals Unlimited / Staphylococcus aureus bacteria, the cause of a wide variety of human infections as well as a common cause of food poisoning. SEM X17,000 at 4- x 4-

Visuals Unlimited / Staphylococcus aureus bacteria, the cause of a wide variety of human infections as well as a common cause of food poisoning. SEM X17,000 at 4- x 4-

Visuals Unlimited / Micrococcus Bacteria on agar. Micrococcus is a gram-positive, aerobic prokaryote that is relatively harmless to humans. It forms either pairs or, as seen here, clusters, SEM X17,000 at 4-x4-

Visuals Unlimited / Yeast (Candida albicans). SEM X31,000, 7.5 X 8.5

Visuals Unlimited / Human eyelash. SEM X500, 3.5 X 4.5

Visuals Unlimited / Close up of proboscis of Fruit fly (Drosophila sp) SEM X350

Visuals Unlimited / Wheat starch granules vary widely in dimensions. The depressions on their surfaces are the imprints of protein bodies with which the starch granules are packed in the wheat grain cells. Wheat starch h...

Visuals Unlimited / Variation in Sperm, from left to right: Rat, Starfish, Rhino, Snow Leopard, Sea Urchin, Rhea, and Human. SEM.

Visuals Unlimited / Waterflea (Daphnia magna)

Visuals Unlimited / Composite flower (Asteraceae) sticky seed capsules. SEM, REM.

Visuals Unlimited / Monocotyledon pollen from an Iris, showing the cleft-shaped aperture or pre-formed opening for exit of the pollen tube. SEM, REM.

Visuals Unlimited / Spider face, showing jaws, fangs, and multiple eyes. ESEM

Visuals Unlimited / Moth wing scales. SEM

Visuals Unlimited / Termite head. SEM

Visuals Unlimited / (Anopheles sp) Mosquito proboscis

Visuals Unlimited / Red and white blood cells. Red blood cells take oxygen from the lungs and deliver it to the rest of the body. White blood cells, unlike red, have a nucleus and are independently mobile. White blood ce...

Visuals Unlimited / Biting Midge head. SEM

Visuals Unlimited / The surface of human skin from the chest skin of a female. SEM X50

Visuals Unlimited / (Bacillus megaterium) Bacteria. SEM X8,000. Bacillus megaterium is used to produce synthetic penicillin.Bacillus megaterium is a non pathogenic soil dwelling bacteria. It is widely used in the biotech...

Visuals Unlimited / Human sperm fertilizing an egg. SEM

Visuals Unlimited / (Borrelia burgdorferi) the bacteria that causes Lyme disease. TEM