"One of the Acalephae; a name given to a large number of marine animals; and redpresenyted chiefly by…
"The under surface, showing the mouth in the center, surrounded by the tentacula, and overial chambers…
"Side-view, showing the tentacula hanging down in their natural position." — Chambers' Encyclopedia,…
"Gonoblastidium of Athorybia rosacea, bearing three hydroclysts, a, a gynophore, b, and two androphores,…
"A, female gonophores of Athorybia rosacea on their common stem or gynophore: a, ovum; b, radial canals."…
"C, female gonophores: a, genital vesicle; b, vitellus; c, radial canals." -Whitney, 1911
"D, female gonophores, enlarged: c, radial canals; d, canal of manubrial cavity." -Whitney, 1911
Auditory and equilibrative organs of jellyfishes. A, of Cunarcha. B, of Pectis. C, of Rhopalonema. D,…
"One of the commonest species, and must have been observed by those who frequent the sea-shore. In the…
"Which is without a central peduncle, yet has numerous long appendages hanging from its border." —…
Fire corals are colonial marine organisms that look rather like real coral. However they are technically…
"The Rhisostoma Cuvieri, a British species, measures two feet, or ever more, in diameter, while…
Hydra are in the Jellyfish family, class Hydrozoa. Cross-section of the body showing the two layers…
If undisturbed, the body and tentacles may occasionally sway gently. If disturbed, a hydra usually shortens…
"The Hydra Viridis is another freshwater polyp, common to ponds and still waters Sometimes…
Colonial, plant-like animals closely related to jellyfish, with stinging cells, Any member of the invertebrate…
Hydrozoa (hydrozoans) are a taxonomic class of very small, predatory animals which can be solitary or…
Jellyfish are saucer-shaped and can be a foot or more in diameter. They are gelatinous and semitransparent.
An illustration of a small jellyfish. Jellyfish are free-swimming members of the phylum Cnidaria. ellyfish…
Gonionemus is a type of hydrozoan related to jellyfish. It uses adhesive discs near the middle of each…
Gonionemus is a type of hydrozoan related to jellyfish. It uses adhesive discs near the middle of each…
Gonionemus is a type of hydrozoan related to jellyfish. It uses adhesive discs near the middle of each…
Gonionemus is a type of hydrozoan related to jellyfish. It uses adhesive discs near the middle of each…
Fresh water Hydra, a jellyfish, is a many celled animal. Shown enlarged 25 times, is the entire animal.
Fresh water Hydra, a jellyfish, is a many celled animal. Shown is a Hydra nettle cells.
Fresh water Hydra, a jellyfish, is a many celled animal. The organs of defence, nettle cells or lasso…
Fresh water Hydra, a jellyfish, is a many celled animal. The organs of defence, nettle cells or lasso…
Hydroids, related to the jellyfish, have three basic life-cycle stages: a tiny free-swimming planula…
Jellyfish have several different morphologies that represent several different cnidarian classes including…
Jellyfish have several different morphologies that represent several different cnidarian classes including…
Jellyfish have several different morphologies that represent several different cnidarian classes including…
"With four foliaceous arms, and long filaments depending from the rim of th umbrella, also found in…
The Portugures man-of-war has a bladderlike float, and locomotion depends upon the wind and current.…
"They usually inhabit the deep seas. They are rarely solitary, but seem to wander about in considerable…
"With a nearly hemispherical body, showing a long proboscis, at the root of which are eight branchiferous…
"Physalia has no proper mouth, but the food is conveyed to the digestive cavity through a number of…
Obelia, a simple polyp, vertical section, highly magnified, m = mouth opening, as.s = alimentary sac
"Fresh-water polype (hydra), two specimens, the one expanded the other contracted, showing multiplication…
"The Porpitae consist of colonies of floating animals furnished with a cartilaginous, horizontal…
"These fragile creatures are able to make long voyages on the surface of the sea. Their nature is such…
There is a large oblong crested float which buoys the fish up, from which hang many tenticles, which…