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Chiton, Tripoplax regularis. on a rock at Salt Point State Park in Sonoma County, California.

Close-up of small white elderflowers. The flowers are covered with tiny dewdrops. The background is dark

The remains, shell, or exo skeleton of a sea urchin by a coastal rock pool.

Study of green floating Azolla Pinnata, A kind of aquatic fern which floats on the surface of water and turns red in Laboratory.

Nereid (segmented worm) from San Fancisco Bay, California, USA. Photographed through a microscope. Wet mount (internal organs visible), 50X, transmitted light.

Close-up of Lacy Umbel Flowers Against Vibrant Green Background.

Dictyota fasciola algae from Mediterranean rocky coast

Green Euphorbia characias, the Mediterranean spurge or Albanian spurge in flower.

green summer foliage details abstract background. leaves, grass, bents and branches

Close-up of wood fern leaves in a Connecticut forest

Representatives of the Lemnaceae, the duckweed family, are well-adapted for use as bioindicators for testing soil and water for toxic substances. Their rapid multiplication and the simplicity of their anatomy are important advantages for this use.

Thin skin epidermis stained with the Fontana silver method showing a large presence of melanin pigment in the basal and spinous layers. The pigmented cells are both melanocytes and keratinocytes. Counterstain orange G-light green

$Lobularia maritima (L.) Desv.\nSweet alyssum\nBrassicaceae$

Achillea millefolium, commonly known as yarrow or common yarrow, is a flowering plant in the family Asteraceae. Other common names include old man's pepper, devil's nettle, sanguinary, milfoil, soldier's woundwort, and thousand seal.

Daphne odora (winter daphne) is a species of flowering plant in the family Thymelaeaceae and is native to China. It is sometimes called Spurge olive, but this name is shared by other plants. It is an evergreen shrub with fragrant, fleshy, pale-pink, tubular flowers. D. odora 'Aureomarginata' has yellow edged leaves, and is hardier and more suitable to cultivation. Shallow depth of field with focus placed over the nearest flower heads.

Close up of common mare’s tail growing in a pond

$Gorgonian Wrapper Nemanthus annamensis, a species of Sea Anemones, is a common commensal on gorgonian sea fans and sea whips in Central Indo-Pacific water deeper than 10m. Sea anemones can contract and bend the column in various directions. The Gorgonian Wrapper's muscles can also be used to expand the column and tentacles by using hydrostatic pressure. This is called a hydrostatic skeleton. Gorgonian Wrappers can detach themselves from the bottom and relocate. Pantar Island, Indonesia, 8°12'51\$

Blooming purple medical plant Bergenia Cordifolia , closeup, macro

Detail of small tunicates colonizing a coral reef in Komodo National Park, Indonesia. Tunicates filter organic material from the ocean, improving water quality.

Many small, white flowers of the Common Yarrow (Achillea millefolium), comprising a single inflorescence, growing in the margins of an agricultural field in central Scotland. The species is native to many areas in the northern hemisphere and has been used by many peoples both to feed livestock and because its essential oils contain many medicinal properties and include the painkiller aspirin.

microscopic cross section showing a detail of the kidney from a rat

Overhead view of Giant Green Anemone on beach, Olympic National Park, Washington, USA.

Free Images: "bestof:Porphyrio porphyrio pulverulentus 1838.jpg « Porphyrio pulverulentus » Porphyrio porphyrio pulverulentus Subspecies of Purple Swamphen - adult « Porphyrio"

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MANNapoli 6281 Sitting Apollo Farnese.jpg

piranesi_roman_antiquities_3_plate_xix_grand_porphyry_urn_with_lid_found_mausoleum_e.jpg

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Porphyry, Isagoge, Venice, Gr. IV 53.jpg

Bulletin 426 Plate XV A Leopardite quartz porphyry.jpg

Candlestick, one of a pair, late Gustavian, Stockholm, c. 1800, Blyberg porphyry, gilt bronze - Nordiska museet - Stockholm, Sweden - DSC00012.JPG

Table clock, late Gustavian, dial signed Israel Dahlstrom, Stockholm, c. 1800, Blyberg porphyry and burnished gilt bronze - Nordiska museet - Stockholm, Sweden - DSC00011.JPG

Portable Altar, about 1200-1220 AD, German, Cologne, walrus ivory, gilded copper, porphyry, enamel, over wooden core - Cleveland Museum of Art - DSC08581.JPG

Portable Altar of Countess Gertrude, shortly after 1038, from the Guelph Treasure, German, Lower Saxony, gold, enamel, porphyry, gems, pearls, niello - Cleveland Museum of Art - DSC08528.JPG

Interno del Mausoleo di Teodorico a Ravenna.jpg

Ammonius_Hermiae,_Florence,_Plut._71,35,_fol._44r.jpg

David_the_Invincible,_Milan,_D_47_sup.,_fol._24v.jpg

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Tomboy AuAg Ratios greater 1 crosshatched.PNG

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Master of 1499 - abbot Robrecht de Clercq.jpg

Statue of Caesar Hadrian from Caesarea.JPG

Minerva Alexander Mazarin Louvre Ma3385.jpg

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South African Geology - Schwarz - 1912 Fig 10.png

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Eagle_and_Queen_Street,_Brisbane_-_early_1900s.jpg

Antoine-Louis_Barye_-_Hercules_and_the_Erymanthian_Boar_-_Walters_27192_-_Three_Quarter.jpg

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