This ClipArt gallery includes 24 Illustrations of several species of sea cucumber. They are marine animals that life on the sea floor worldwide. Holothurians are often harvested for human consumption, sold under the names trepang, balate, or sea slug.

"Ægirus puncitilucens (dorsal view)"-Whitney, 1902

Ægirus

"Ægirus puncitilucens (dorsal view)"-Whitney, 1902

"Æolis coronata, dorsal view."-Whitney, 1902

Æolis

"Æolis coronata, dorsal view."-Whitney, 1902

"A genus of marine animals closely allied to the Hydraform Polypi, but of much greater size, and always living separately, very generally affixed by the base of rocks or shells. The olk genus Actinia has been subdivided into a number of genera, and is now the type of a gamily, Actiniadae. They consist of a fleshy sac with one orifice, around which are numerous tentacula, and when these are expanded, much resemble flowers, and have therefore been called Animal Flowers and Sea Anemones." — Chambers' Encyclopedia, 1875

Actinia

"A genus of marine animals closely allied to the Hydraform Polypi, but of much greater size, and always…

"A genus of marine animals closely allied to the Hydraform Polypi, but of much greater size, and always living separately, very generally affixed by the base of rocks or shells. The olk genus Actinia has been subdivided into a number of genera, and is now the type of a gamily, Actiniadae. They consist of a fleshy sac with one orifice, around which are numerous tentacula, and when these are expanded, much resemble flowers, and have therefore been called Animal Flowers and Sea Anemones." — Chambers' Encyclopedia, 1875

Actinia

"A genus of marine animals closely allied to the Hydraform Polypi, but of much greater size, and always…

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied to them about a century ago by Ellis, one of the most celebrated investigators of the department of natural history to which they belong, who remarks that 'their tentacles, being disposed in regular circles, and tinged with a variety of bright lively colors, very nearly represent the beautiful petals of some of our most elegantly fringed and radiated flowers, such as the carnation, marigold, and anemone.'" — Chambers' Encyclopedia, 1875

Anemone

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied…

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied to them about a century ago by Ellis, one of the most celebrated investigators of the department of natural history to which they belong, who remarks that 'their tentacles, being disposed in regular circles, and tinged with a variety of bright lively colors, very nearly represent the beautiful petals of some of our most elegantly fringed and radiated flowers, such as the carnation, marigold, and anemone.'" — Chambers' Encyclopedia, 1875

Anemone

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied…

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied to them about a century ago by Ellis, one of the most celebrated investigators of the department of natural history to which they belong, who remarks that 'their tentacles, being disposed in regular circles, and tinged with a variety of bright lively colors, very nearly represent the beautiful petals of some of our most elegantly fringed and radiated flowers, such as the carnation, marigold, and anemone.'" — Chambers' Encyclopedia, 1875

Anemone

"A popular name of the species of actinia and some other Actiniadae. It seems to have been first applied…

"Sea anemone dissected; c, tentacles; d, mouth; e, stomach; white lines above k, the mesenteries." —Davison, 1906

Anemone

"Sea anemone dissected; c, tentacles; d, mouth; e, stomach; white lines above k, the mesenteries." —Davison,…

"The whole internal cavity in these animals is occupied by little, white tubes. The mouth opens at the extremity of the body; it forms a sort of funnel, surrounded like a crown with an elegant circle of tentacula."

Cristatella Mucedo (Cuvier)

"The whole internal cavity in these animals is occupied by little, white tubes. The mouth opens at the…

A sea cucumber may be compared t a sea urchin that has been drawn out in the direction of the pole - that is, from mouth to anus (Colton, 1903).

Sea Cucumber

A sea cucumber may be compared t a sea urchin that has been drawn out in the direction of the pole -…

"Dissection of Holothurian (Holothuria tubulosa) from the ventral surface." t, tentacles; tf, scattered tube-feet; c, calcareous ring; a, ampullae of tentacles; r, circular vessel; st, stone canal; o, Polian vesicle; rc, radial canals; lm, longitudinal muscles; g1-g2, gut; m, mesentery; cl, cloaca; an, anus; rt, right respiratory tree; ov, ovary. -Thomson, 1916

Holothurian Dissection

"Dissection of Holothurian (Holothuria tubulosa) from the ventral surface." t, tentacles; tf, scattered…

An illustration of a sea cucumber. The sea cucumber (also known as trepang, bêche-de-mer, balate, or ambiguously, sea slug) is an echinoderm of the class Holothuroidea, with an elongated body and leathery skin, which is found on the sea floor worldwide. It is also named because of its cucumber-like shape. The body contains a single, branched gonad. Like all echinoderms, sea cucumbers have an endoskeleton just below the skin, calcified structures that are usually reduced to isolated microscopic ossicles (or sclerietes) joined by connective tissue.

Holothuria Tubule

An illustration of a sea cucumber. The sea cucumber (also known as trepang, bêche-de-mer, balate,…

An illustration of the larval form of the Holothuria tubulosa, sea cucumber.

Holothuria Tubulosa (Larva)

An illustration of the larval form of the Holothuria tubulosa, sea cucumber.

A large sea cucumber.

Sea Lemon

A large sea cucumber.

An illustration of a Oneirophanta Mutabilis, a type of sea cucubmer. The sea cucumber (also known as trepang, bêche-de-mer, balate, or ambiguously, sea slug) is an echinoderm of the class Holothuroidea, with an elongated body and leathery skin, which is found on the sea floor worldwide. It is also named because of its cucumber-like shape. The body contains a single, branched gonad. Like all echinoderms, sea cucumbers have an endoskeleton just below the skin, calcified structures that are usually reduced to isolated microscopic ossicles (or sclerietes) joined by connective tissue.

Oneirophanta Mutabilis

An illustration of a Oneirophanta Mutabilis, a type of sea cucubmer. The sea cucumber (also known as…

An illustration of a Phyllophorus Urna.

Phyllophorus Urna

An illustration of a Phyllophorus Urna.

A magnified view of the extension of a Sea Cucumber.

Plumatella Cristallina

A magnified view of the extension of a Sea Cucumber.

Sea cucumber dissected to show alimentary canal.

Sea cucumber

Sea cucumber dissected to show alimentary canal.

An interior view of a sea cucumber. The sea cucumber (also known as trepang, bêche-de-mer, balate, or ambiguously, sea slug) is an echinoderm of the class Holothuroidea, with an elongated body and leathery skin, which is found on the sea floor worldwide. It is also named because of its cucumber-like shape. The body contains a single, branched gonad. Like all echinoderms, sea cucumbers have an endoskeleton just below the skin, calcified structures that are usually reduced to isolated microscopic ossicles (or sclerietes) joined by connective tissue.

Sea Cucumber

An interior view of a sea cucumber. The sea cucumber (also known as trepang, bêche-de-mer, balate,…

Sea-cucumbers are Echinoderms. They are worm-like in form. They move about by the alternate contraction and extension of their bodies.

Sea-cucumber

Sea-cucumbers are Echinoderms. They are worm-like in form. They move about by the alternate contraction…

"The Angular Sea-Cucumber, <em>C. pentactes</em>, is also a European species, with double rows of warty suckers." &mdash; Goodrich, 1859

Angular sea-cucumber

"The Angular Sea-Cucumber, C. pentactes, is also a European species, with double rows of warty…

"<em>Sea-Cucumbers</em> are of various forms, some of the species being found in nearly all seas. They generally live among sea-weed or in mud, and are supposed to seize their prey by their tentacles. They have the power of elongating and contracting their forms so as at one time to appear like worms, and at another to assume the shape of an hour-glass." &mdash; Goodrich, 1859

Common sea-cucumber

"Sea-Cucumbers are of various forms, some of the species being found in nearly all seas. They…

A type of sea cucumber that is a beautiful rose-color with fine white stripes running from end to end.

Sea-Orange

A type of sea cucumber that is a beautiful rose-color with fine white stripes running from end to end.

"Spicules of Holothurians. The series 1-6 shows stages in the development of an anchor and a plate in a Synapta. The series A-E shows stages in the development of a wheel in Chiridota, a synaptid." -Thomson, 1916

Holothurian Spicules

"Spicules of Holothurians. The series 1-6 shows stages in the development of an anchor and a plate in…