The Corals and Sea Anemone ClipArt gallery provides 241 images of corals and sea anemone in the phylum cnidaria. They attach themselves to the bottom using an adhesive 'foot', called a basal disc.

The Radiate, Acaleph; a Medusa from the genus Tiaropsis.

Acaleph Radiate

The Radiate, Acaleph; a Medusa from the genus Tiaropsis.

"A, diagram showing the sequence of mesenterial development in an Actinian. B, diagrammatic transverse section of Gonactinia prolifera." — The Encyclopedia Britannica, 1910

Actinian

"A, diagram showing the sequence of mesenterial development in an Actinian. B, diagrammatic transverse…

"Sea-Fan; Sea Pen; Cornularia rugosa."-Whitney, 1902

Alcyonaria

"Sea-Fan; Sea Pen; Cornularia rugosa."-Whitney, 1902

Of Alcyonaria, Alcyonacea.

Alcyonacea Alcyonaria

Of Alcyonaria, Alcyonacea.

Of Alcyonaria, Axifera.

Axifera Alcyonaria

Of Alcyonaria, Axifera.

Of Alcyonaria, Stelechotokea.

Stelechotokea Alcyonaria

Of Alcyonaria, Stelechotokea.

Of Alcyonaria, Stolonifera.

Stolonifera Alcyonaria

Of Alcyonaria, Stolonifera.

"An expanded Alcyonarian zooid, showing the mouth surrounded by eight pinnate tentacles. st, Stomodaeum in the center of the transparent body; m, messenteries; asm, asulcar mesenteries; B, spicules, enlarged." — The Encyclopedia Britannica, 1910

Alcyonarian

"An expanded Alcyonarian zooid, showing the mouth surrounded by eight pinnate tentacles. st, Stomodaeum…

"Transverse section of an Alcyonarian zooid. mm, Mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum." — The Encyclopedia Britannica, 1910

Alcyonarian

"Transverse section of an Alcyonarian zooid. mm, Mesenteries; mb, muscle banners; sc, sulcus; st, stomodaeum."…

Varieties of Alcyonarian spicules.

Alcyonarian Spicules

Varieties of Alcyonarian spicules.

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order Asteroida, and consisting of a polype-mass with starlike pores and protrusive polypes." — Chambers' Encyclopedia, 1875

Alcyonium

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order…

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order Asteroida, and consisting of a polype-mass with starlike pores and protrusive polypes." — Chambers' Encyclopedia, 1875

Alcyonium

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order…

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order Asteroida, and consisting of a polype-mass with starlike pores and protrusive polypes." — Chambers' Encyclopedia, 1875

Alcyonium Digitatum

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order…

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order Asteroida, and consisting of a polype-mass with starlike pores and protrusive polypes." — Chambers' Encyclopedia, 1875

Alcyonium Digitatum

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order…

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order Asteroida, and consisting of a polype-mass with starlike pores and protrusive polypes." — Chambers' Encyclopedia, 1875

Alcyonium Digitatum

"A genus of Zoophytes, the type of family called Alcyonide, belonging to the class anthozoa, and order…

The tentacles of the sea anemone are numerous and are borne on a disk surrounding the mouth at the free end.

Anemone

The tentacles of the sea anemone are numerous and are borne on a disk surrounding the mouth at the free…

The sea anemone is an animal that can come in various sizes and colors.

Anemone

The sea anemone is an animal that can come in various sizes and colors.

"Sea anemones on back of hermit crab." -Thomson, 1916

Anemone

"Sea anemones on back of hermit crab." -Thomson, 1916

"The common Sea-anemone." -Parker, 1900

Common Sea Anemone

"The common Sea-anemone." -Parker, 1900

The stomach and mouth of a Sea Anemone. c - tentacles; d - mouth; e - stomach; g,g' - openings in the partitions; k - chambers

Sea Anemone

The stomach and mouth of a Sea Anemone. c - tentacles; d - mouth; e - stomach; g,g' - openings in the…

"Vertical section of a sea anemone. t., Tentacles; o., mouth; oes., oesophagus; c., c'., apertures through a mesentery; a., a'., acontia; g., genital organs on mesentery; m.f., mesenteric filaments; m.l. longitudinal muscles; s., primary septum or mesentery; s'., secondary septum; s''., tertiary septum; v., basal disc." -Thomson, 1916

Sea Anemone

"Vertical section of a sea anemone. t., Tentacles; o., mouth; oes., oesophagus; c., c'., apertures through…

"Section through sea anemone. A, B, Directive septa; m.f., mesenteric filaments; g., genital organs; m.l., longitudinal muscles; s., primary septum; s'., secondary septum; s''., tertiary septum. The arrow enters between two primary septa (an intra-septal cavity), and passes out between two tertiary septa." -Thomson, 1916

Sea Anemone

"Section through sea anemone. A, B, Directive septa; m.f., mesenteric filaments; g., genital organs;…

Many types of sea anemones attached to the ocean floor.

Sea Anemone

Many types of sea anemones attached to the ocean floor.

The popular name given to a number of animals of the subkingdom Coelenterata and class Actinozoa, including the genus Actinia and other genera.

Sea Anemones

The popular name given to a number of animals of the subkingdom Coelenterata and class Actinozoa, including…

"Medusiform person, one of the Anthomedusae, detached from a hydroid colony of Syncoryne. Ocelli are seen at the base of the tentacles, and also (as an exception) groups of medusiform buds." — Encyclopedia Britannica, 1893

Anthomedusae

"Medusiform person, one of the Anthomedusae, detached from a hydroid colony of Syncoryne. Ocelli are…

"End of a branch of red coral of commerce, Corallium rubrum, with three anthozooids, A, B, C, in different degrees of expansion: k, mouth; a, the part of the coenosarc which rises into a cup around the base of each anthozooid."-Whitney, 1902

Anthozooids

"End of a branch of red coral of commerce, Corallium rubrum, with three anthozooids, A, B, C, in different…

"Structure of Antipatharians. 1. A group of polyps--M. mouth; t., tentacles. 2. Axis without polyps and coenenchyma, covered with spines (Sp.). 3. Vertical section of polyp--A., axis; t., tentacle; g., gullet; m., mesentery; o., ovary; m.f., mesenteric filaments. 4. Cross section of a polyp--EC., ectoderm; M., mesogloea; EN., endoderm; G., gullet; MS., mesenteries." -Thomson, 1916

Antipatharians

"Structure of Antipatharians. 1. A group of polyps--M. mouth; t., tentacles. 2. Axis without polyps…

"A, portion of a colony of Antipathes dichotoma. B, single zooid and axis of the same magnified. m, mouth; mf, mesenterial filament; ax, axis. C, transverse section through the oral cone of Antipathella minor; st, stomodaeum; ov, ovary." — The Encyclopedia Britannica, 1910

Antipathes Dichotoma

"A, portion of a colony of Antipathes dichotoma. B, single zooid and axis of the same magnified. m,…

"Diagram of the metamorphosis of the free, tailed larva into the fixed Ascidian. A, stage of free-swimming larva; B, larva recently fixed; C, older fixed stage. adh, adhesive papillae; atr, atrial cavity; cil. gr, ciliated groove; end, endostyle; ht, heart; med, ganglion of trunk; n. gn, nerve-ganglion; noto, notochord; or, oral aperture; rect, reectum; sens ves, sense vesicle; stig, stigmata; stol, stolon; t, tail." -Parker, 1900

Ascidian Stages

"Diagram of the metamorphosis of the free, tailed larva into the fixed Ascidian. A, stage of free-swimming…

Commonly known as the ascidians or sea squirts.

Compound Ascidian

Commonly known as the ascidians or sea squirts.

"The compound ascidians, or <em>Botryllidae</em>, are united togetyher by the coalescence of of their mantles, so as to form a leathery or gelatinous mass, ususally attached to stones or sea-weed; in this the seperate animals are imbedded round a common canal, many of them being adorned with beautiful colors, and these masses are of an almost infinte variety of forms." &mdash; Goodrich, 1859

Compound ascidians

"The compound ascidians, or Botryllidae, are united togetyher by the coalescence of of their…

"The compound ascidians, or <em>Botryllidae</em>, are united togetyher by the coalescence of of their mantles, so as to form a leathery or gelatinous mass, ususally attached to stones or sea-weed; in this the seperate animals are imbedded round a common canal, many of them being adorned with beautiful colors, and these masses are of an almost infinte variety of forms." &mdash; Goodrich, 1859

Compound Ascidians

"The compound ascidians, or Botryllidae, are united togetyher by the coalescence of of their…

"The <em>Clavellinidae</em>, or <em>Social Ascidians</em>, are united by means of a sort of creeping stem, which runs along the surface of submarine objects, and gives rise at intervals to short footstalks, at the extremity of which the animals are supported." &mdash; Goodrich, 1859

Social Ascidians

"The Clavellinidae, or Social Ascidians, are united by means of a sort of creeping…

"Tangential section of a larva of Astroides calicularis which has fixed itself on a piece of cork. ec, Ectoderm; en, endoderm; mg, mesogloea; m, m, mesenteries; s, septum; b, basal plate formed of ellipsoids of carbonate of lime secreted by the basal ectoderm; ep, epitheca." &mdash; The Encyclopedia Britannica, 1910

Astroides Calicularis

"Tangential section of a larva of Astroides calicularis which has fixed itself on a piece of cork. ec,…

"Portion of the corallum of Astylus subvividis (one of the Stylasteridae), showing cyclosystems placed at intervals on the branches, each with a central gastropore and zone of slit-like dactylopores." &mdash; Encyclopedia Britannica, 1893

Astylus Subvividis

"Portion of the corallum of Astylus subvividis (one of the Stylasteridae), showing cyclosystems placed…

"Gelatinous substance of the disc of Aurelia, showing-a, fibrous trabeculae, and b, wandering endoderm cells, with amaebold movements." &mdash; Encyclopedia Britannica, 1893

Aurelia

"Gelatinous substance of the disc of Aurelia, showing-a, fibrous trabeculae, and b, wandering endoderm…

"Development of Aurelia. Above to the left, young scyphistoma with four perradial tentacles. Below to left, scyphistoma with sixteen tentacles and first constriction. To the right, strobila condition of the scyphistoma, consisting of thirteen metameric segments; the uppermost still possesses the sixteen tentacles of the scyphistoma; the remainder have no tentacles, but are ephyrae, each with eight bifid arms. each segment when detached becomes an ephyra." &mdash; Encyclopedia Britannica, 1893

Aurelia

"Development of Aurelia. Above to the left, young scyphistoma with four perradial tentacles. Below to…

"Surface view of the sub-umbrella or oral aspect of Aurelia aurita, to show the position of the openings of the sub-genital pits, GP. In the center is the mouth, with four perradial arms corresponding to its angles. The four sub-genital pits are seen to be interradial. x indicates the outline of the roof of a sub-genital pit; y, the outline of its floor or oral limit, in which is the opening." &mdash; Encyclopedia Britannica, 1893

Aurelia Aurita

"Surface view of the sub-umbrella or oral aspect of Aurelia aurita, to show the position of the openings…

"Half of the lower surface of Aurelia aurita. The transparent tissues allow the enteric cavities and canals to be seen through them. a, marginal lappets hiding tentaculocysts; b, oral arms; v, axial or gastric portion of the enteric cavity; gv, radiating and anastomosing canals of the enteric system; ov, ovaries." &mdash; Encyclopedia Britannica, 1893

Aurelia Aurita

"Half of the lower surface of Aurelia aurita. The transparent tissues allow the enteric cavities and…

"Tentaculocyst and marginal lappets of Aurelia aurita. In the lefthand figure-ML, marginal lappets; T, tentaculocyst; A, superior or aboral surface, magnified about 50 diameters. In the right-hand figure-A, superior or aboral olfactory pit; B, inferior or adoral olfactory pit; H, bridge between the two marginal lappets forming the hood; T, tentaculocyst; End, endoderm; Ent, canal of the enteric system continued into the tentaculocyst; Concendodermal concretion; oc, ectodermal pigment (ocellus). The drawing represents a section, taken in a radial vertical plane so as to pass through the long axis of the tentaculocyst." &mdash; Encyclopedia Britannica, 1893

Aurelia Aurita

"Tentaculocyst and marginal lappets of Aurelia aurita. In the lefthand figure-ML, marginal lappets;…

"The Blue Minyad is a type of a family in which the base of the body, in place of extending itself in a disk-like form, in order to grapple with the rocks and other projections at the bottom of the sea, turns itself inward, forming a sort of purse, which seems to imprison the air. From this results a sort of hydrostatic apparatus, aided by which the animals can float in the water and transport themselves from one place to another."

Blue Minyad (Minyas Cyanea)

"The Blue Minyad is a type of a family in which the base of the body, in place of extending itself in…

"Portion of the body-wall of Hydra, showing ectoderm cells above, separated by "structureless lamelia" from three flagellate endoderm cells below. The latter are vacnolated, and contain each a nucleus and several dark granules. In the middle ectoderm cell are seen a nucleus and three nematocysts, with trigger hairs projecting beyond the cuticle. A large nematocyst with everted thread, is seen in the right-hand ectodermal cell." &mdash; Encyclopedia Britannica, 1893

Body-wall

"Portion of the body-wall of Hydra, showing ectoderm cells above, separated by "structureless lamelia"…

Eschara elegans (Coscinopleura) is a prehistoric bryozoan, a marine animal similar to a coral.

Prehistoric Bryozoan

Eschara elegans (Coscinopleura) is a prehistoric bryozoan, a marine animal similar to a coral.

Eschara philomela is a prehistoric bryozoan, a marine animal similar to a coral.

Prehistoric Bryozoan

Eschara philomela is a prehistoric bryozoan, a marine animal similar to a coral.

"Corallium rubrum, a corner of a colony. A., Anthocodia or retractile portion of a polyp; r.p., completely retracted polyp, with the verruca or calyx portion left protruding; C., coenenchyma; T., pinnate tentacles." -Thomson, 1916

C. Ruburm

"Corallium rubrum, a corner of a colony. A., Anthocodia or retractile portion of a polyp; r.p., completely…

An illustration of calcarina spengleri.

Calcarina Spengleri

An illustration of calcarina spengleri.

"Diagram of a colony of Campanularia, showing four forms of persons. A, portion of a fixed colony; a, hydriform person; b, bud-bearing hydriform person (blastostyle); B, free-swimming colony, being sexless medusiform person (blastoscheme of Allmen), with modified medusiform persons budding from its radiating canals, as sporosacs." &mdash; Encyclopedia Britannica, 1893

Campanularia

"Diagram of a colony of Campanularia, showing four forms of persons. A, portion of a fixed colony; a,…

"Ideal landscape of the Carboniferous Period." -Taylor, 1904

Carboniferous Landscape

"Ideal landscape of the Carboniferous Period." -Taylor, 1904

"Diagram of a vertical section of Carmarina hastata, passing on the right through the whole length of a radiating canal, and on the left through the outspread lobe of an ovary. l, gelatinous substance of the disc and gastric ovaries; k, stomach (dilation of the manubrium); Z, tongue-like process of the gelatinous substance; h, cartilaginous process ascending from the marginal ring at the site of a tentaculocyst; c, circular canal; b, tentaculocyst; v, velum; uk, cartilaginous marginal ring." &mdash; Encyclopedia Britannica, 1893

Carmarina

"Diagram of a vertical section of Carmarina hastata, passing on the right through the whole length of…

"This genus has the summit hollowed out into a starlike cup. It inhabits the Mediterranean, and is common on some parts of the English and Irish coasts."

Caryophyllia Cyathus (Lamarck)

"This genus has the summit hollowed out into a starlike cup. It inhabits the Mediterranean, and is common…

"A, Cerianthus solitarius. B, Transverse section of the stomodaeum, showing the sulculus, sl, and the arrangement of the mesenteries. C, Oral aspect of Arachnactis brachiolata, the larva of Cerianthus, with seven tentacles. D, Transverse section of an older larva. The numerals indicate the order of development of the mesenteries." &mdash; The Encyclopedia Britannica, 1910

Cerianthus Solitarius

"A, Cerianthus solitarius. B, Transverse section of the stomodaeum, showing the sulculus, sl, and the…

"Transverse section through a zooid of Cladocora. The corallum shaded with dots, the mesogloca represented by a thick line. Thirty-two septa are present, six in the entocoeles of the primary cycle of mesenteries, I; six in the entocoeles of the secondary cycle of mesenteries, II; four in the entocoeles of the tertiary cycle of mesenteries, II, only four pairs of the latter being developed; and sixteen in the entocoeles between the mesenterial pairs. D, D, Directive mesenteries; st, stomodaeum." &mdash; The Encyclopedia Britannica, 1910

Cladocora

"Transverse section through a zooid of Cladocora. The corallum shaded with dots, the mesogloca represented…

"Diagram of Clava, showing a hydriform person surrounded by a verticil of degenerate medusiform persons (sporosacs)." &mdash; Encyclopedia Britannica, 1893

Clava

"Diagram of Clava, showing a hydriform person surrounded by a verticil of degenerate medusiform persons…

"Sections of types Coelenterates (diagrammatic): 1 (longitudinal) and 2 (transverse) of a tubular hydroid; 3, Sea Anemone (longitudinal); 4, same (transverse, at the level of the upper dotted line); 5, same (transverse section of same at the level of the dotted line. The continuous line is ectoderm, the broken line, entoderm, and the stippled portion, mesenchyma. c.c., circular canal; g, gullet; g.v., gastro-vascular cavity; m, mouth; ma., manubrium; mes., mesentery; mes.1, directive mesentery; o, ostium; r.c., radial canal; t, tentacle; v, velum." -Galloway, 1915

Cnidaria

"Sections of types Coelenterates (diagrammatic): 1 (longitudinal) and 2 (transverse) of a tubular hydroid;…

"Commensalism of sea-anemones and hermit-crab." -Thomson, 1916

Commensalism

"Commensalism of sea-anemones and hermit-crab." -Thomson, 1916

"Cancrisocia living as a commensal on the back of a crab." -Parker, 1900

Commensalism

"Cancrisocia living as a commensal on the back of a crab." -Parker, 1900

This organ-pipe coral is a well-known red coral. They are classified as cnidarians.

Coral

This organ-pipe coral is a well-known red coral. They are classified as cnidarians.

Formation of Coral Reeds, according to Darwin.

Coral

Formation of Coral Reeds, according to Darwin.

"Coral is the name applied to the stony structures secreted by many of the actinozoa, and applied to the animals themselves. The coral of commerce is the production of various polyps, and is of different colors and internal structure. A&ndash; a branch of Dendrophyllia."&mdash;(Charles Leonard-Stuart, 1911)

Coral

"Coral is the name applied to the stony structures secreted by many of the actinozoa, and applied to…

"Coral is the name applied to the stony structures secreted by many of the actinozoa, and applied to the animals themselves. The coral of commerce is the production of various polyps, and is of different colors and internal structure. B&ndash; part of a stock of red coral, with <em>(a)</em> fully extended polyp and <em>(b, b)</em> two polyps, partly extended. "&mdash;(Charles Leonard-Stuart, 1911)

Coral

"Coral is the name applied to the stony structures secreted by many of the actinozoa, and applied to…