RMA8YCP1–Closeup macro of minute colony of marine Hydrozoa polyps . Latin species name is Obelia longissima . North Pacific, aquaria
RMT81MPD–Ernst Haeckel, Sertularia, Hydrozoa
RMCP11YB–Colorful hydrozoa, Stylaster sp., Sulawesi Indonesia
RMF87EHH–Siphonophorae hydrozoa: Epibulia ritteriana 1,2, and Salacella uvaria 3-6. Chromolithograph by Adolf Glitsch from an illustration by Ernst Haeckel from Art Forms in Nature, Kunstformen der Natur, Liepzig, Germany, 1904.
RM2A2NNXE–Tubularia ramosa, Print, Eudendrium ramosum, sometimes known as the tree hydroid, is a marine species of cnidaria, a hydroid (Hydrozoa) in the family Eudendriidae of the order Anthoathecata
RF2DAMBMH–Hydra, light micrograph. Hydra are small freshwater animals of the phylum Cnidaria and class Hydrozoa.
RMDY79YT–Hydrozoa in coral reef, Oahu, Hawaii, USA
RMBG5FEA–hydrozoa, hydrozoa
RM2AYA94R–Hydra is a genus of small fresh-water animals of the phylum Cnidaria and class Hydrozoa.
RFPXAMFP–Hydroids are a life stage for most animals of the class Hydrozoa, small predators related to jellyfish. Some hydroids such as the freshwater Hydra are
RMMBGBYD–Plate 7 Epibulia Siphonophorae from ‘Kunstformen der Natur’ (Art Forms in Nature) illustrated by Ernst Haeckel (1834-1919). See more information below.
RMC2CB29–Brittle star, Ophiothrix sp, on Hydroid, Hydrozoa Class, Manado, Sulawesi, Indonesia, Asia
RMW7RYJA–Hydroid colonies (Obelia dichotoma) attached to rocks in a rockpool, Rhossili, The Gower peninsula, Wales, UK, June.
RM2B05EGK–green hydra (Chlorohydra viridissima, Hydra viridis), in light mikroskopy, dark field, Germany
RMMKD3TG–Portuguese man o' war (Physalia physalis), Tenerife, Canary Islands.
RM2C3HG9C–Obelia, Hydrozoa, microscope view
RMP7F0YW–Siphonophorae hydrozoa: Epibulia ritteriana 1,2, and Salacella uvaria 3-6. Chromolithograph by Adolf Glitsch from an illustration by Ernst Haeckel from Art Forms in Nature, Kunstformen der Natur, Liepzig, Germany, 1904.
RMF599HD–Large group of jellyfish Aurelia aurita in a tank of the Genoa aquarium the biggest and most famous in Europe
RMF87EHT–Siphonophorae hydrozoa: Porpema prunella and Porpita species, young and adult colonies, gas bladder, etc. Chromolithograph by Adolf Glitsch from an illustration by Ernst Haeckel from Art Forms in Nature, Kunstformen der Natur, Liepzig, Germany, 1904.
RF2JAJ652–Hydra, light micrograph. Cross-section of the body showing the two layers of cells of the body wall. Educational material for lesson of zoology.
RM2CFAKTA–Siphoneae Hydrozoa
RM2A2NNXD–Tubularia ramosa, Print, Eudendrium ramosum, sometimes known as the tree hydroid, is a marine species of cnidaria, a hydroid (Hydrozoa) in the family Eudendriidae of the order Anthoathecata
RMTRPX76–Hydrozoa, Fire coral, Millepora sp. Malaysia
RF2DAMBMR–Hydra, light micrograph. Hydra are small freshwater animals of the phylum Cnidaria and class Hydrozoa.
RMEHRJPC–Oaten Pipes - Tubularia larynx
RFF4Y4D4–Hydra protozoa animal
RM2AYA94P–Hydra is a genus of small fresh-water animals of the phylum Cnidaria and class Hydrozoa.
RMJ4CMGY–PSM V16 D660 Oceanic hydrozoa
RMMA96EY–Plate 25 Diphasia Sertulariae from ‘Kunstformen der Natur’ (Art Forms in Nature) illustrated by Ernst Haeckel (1834-1919). See more information below.
RMR5A2M6–Decorator Crab, Decapoda Order, carrying Hydroids, Hydrozoa Class, Melasti dive site, Seraya, Bali, Indonesia, Indian Ocean
RMW854GK–Contracted spider crab (Hyas coarctatus) with hydroids, Atlantic Ocean,
RM2B01PXW–green hydra (Chlorohydra viridissima, Hydra viridis), in light mikroskopy, dark field, Germany
RMMKD3TH–Portuguese man o' war (Physalia physalis), Tenerife, Canary Islands.
RM2C3HG9H–Obelia, Hydrozoa, microscope view
RMP7DTMF–Siphonophorae hydrozoa: Porpema prunella and Porpita species, young and adult colonies, gas bladder, etc. Chromolithograph by Adolf Glitsch from an illustration by Ernst Haeckel from Art Forms in Nature, Kunstformen der Natur, Liepzig, Germany, 1904.
RMT81MW1–Ernst Haeckel, Siphonophorae, Hydrozoa
RM2GXBKXE–Crystal jellyfish (Aequorea victoria)
RF2G2JFK0–The freshwater hydra and its mode of locomotion
RF2GAC8DD–Olindias Phosphorica, Mallorca, Spain
RM2CFAKPC–Siphoneae Hydrozoa
RM2A2NPM8–Velella scaphidia, Print, Velella is a monospecific genus of hydrozoa in the Porpitidae family. Its only known species is Velella velella, a cosmopolitan free-floating hydrozoan that lives on the surface of the open ocean. It is commonly known by the names sea raft, by-the-wind sailor, purple sail, little sail, or simply Velella
RMG08G12–Marine Obelia, darkfield photomicrograph
RF2DAMBMB–Hydra, light micrograph. Hydra are small freshwater animals of the phylum Cnidaria and class Hydrozoa.
RFS2TCDD–Velella washed up on the Oregon coast
RFAMMFAJ–A hydra cross section
RM2AYA98E–Hydra is a genus of small fresh-water animals of the phylum Cnidaria and class Hydrozoa.
RMJ4CMGX–PSM V16 D660 Gonophores of the hydrozoa
RMMBGC1P–Plate 6 Tubuletta Tubulariae from ‘Kunstformen der Natur’ (Art Forms in Nature) illustrated by Ernst Haeckel (1834-1919). See more information below.
RM2FXG6XP–Hydroids, Hydrozoa Class, and Crinoids, Crinoidea Class, with sun in background, Avalanche dive site, Nyata Island, near Alor, Indonesia
RMW854G0–Great spider crab (Hyas araneus) with hydroids, Atlantic Ocean, Norway
RM2AYYJTA–green hydra (Chlorohydra viridissima, Hydra viridis), in light mikroskopy, dark field, Germany
RMR3N54Y–By-the-wind Sailor (Velella velella), Mediterranean, Villefranche-sur-Mer, France
RF2BE0NJD–Siphonophore (Siphonophorae) from Ernst Haeckel's Kunstformen der Natur, 1904
RF2J67DRD–Portuguese man o' war (Physalia physalis), also known as the man-of-war, on a beach.
RMT81MTP–Ernst Haeckel, Siphonophorae, Hydrozoa
RM2GXBTFA–Crystal jellyfish (Aequorea victoria)
RFP4DACY–A beautiful but deadly Portuguese man of war or bluebottle
RF2GAC8DG–Olindias Phosphorica, Mallorca, Spain
RM2CFAKR9–Siphoneae Hydrozoa
RM2A2NPM9–Velella oblonga, Print, Velella is a monospecific genus of hydrozoa in the Porpitidae family. Its only known species is Velella velella, a cosmopolitan free-floating hydrozoan that lives on the surface of the open ocean. It is commonly known by the names sea raft, by-the-wind sailor, purple sail, little sail, or simply Velella
RMG08G0W–Marine Obelia, darkfield photomicrograph
RF2DAMBMD–Hydra, light micrograph. Hydra are small freshwater animals of the phylum Cnidaria and class Hydrozoa.
RF2CCJYKW–Chrysis (wasp), Clathrus (fungi), Clava (hydrozoa), Clavaria (fungi), Clio (Sea snail) and Combretum (Combretaceae) Handcolored copperplate engraving From the Encyclopaedia Londinensis or, Universal dictionary of arts, sciences, and literature; Volume IV; Edited by Wilkes, John. Published in London in 1810
RMKBXDY8–EB1911 Hydrozoa Fig. 1
RMC6P1EY–Pink Hearted Hydroids (Tubularia) feeding on plankton. New England, USA, North Atlantic Ocean
RM2FXG9NP–Skeleton Shrimp, Caprella sp, on Hydroid, Hydrozoa Class, Jemeluk Wall dive site, Amed, Karangasem, Bali, Indonesia, Indian Ocean
RMW7RECM–Cross jellyfish (Earleria cellularia) swims below the surface in the evening. Browning Pass, Vancouver Island, British Columbia, Canada. North East Pacific Ocean.
RM2B05DB4–green hydra (Chlorohydra viridissima, Hydra viridis), in light mikroskopy, dark field, Germany
RMMKD3PJ–Portuguese man o' war (Physalia physalis) trapped in residues floating on ocean surface. Photo denunciation, garbage in the sea. No matter the place if not the consequences.
RF2BE0NM9–Anthomedusa (Anthomedusae) from Ernst Haeckel's Kunstformen der Natur, 1904
RF2J67E54–Portuguese man o' war (Physalia physalis), also known as the man-of-war, on a beach.
RMT81MWG–Ernst Haeckel, Siphonophorae, Hydrozoa
RM2GXBJ9R–Crystal jellyfish (Aequorea victoria)
RFP65MJK–Portuguese man of war floating in a harbour
RM2BF2DNK–Hydrozoa. Hydrozoa Tissue for extract taken - GSPlate CURI14 P04; H0317 Jun 20161
RM2CFAKPR–Siphoneae Hydrozoa
RM2A2NPM1–Velella antarctica, Print, Velella is a monospecific genus of hydrozoa in the Porpitidae family. Its only known species is Velella velella, a cosmopolitan free-floating hydrozoan that lives on the surface of the open ocean. It is commonly known by the names sea raft, by-the-wind sailor, purple sail, little sail, or simply Velella
RM2KA0WRG–Antique engraved illustration of the hydra. Vintage illustration of the hydra. Old engraved picture. Book illustration published 1907. Hydra is a genus of small, freshwater organisms of the phylum Cnidaria and class Hydrozoa. They are native to the temperate and tropical regions. The genus was named by Linnaeus in 1758 after the Hydra, which was the many-headed beast defeated by Hercules as when the animal had a part severed, it would regenerate much like the hydra’s heads. Biologists are especially interested in Hydra because of their regenerative ability; they do not appear to die of old ag
RMKBTP1A–EB1911 Hydrozoa Fig. 3
RMC6P1DC–Pink Hearted Hydroids (Tubularia) feeding on plankton. New England, USA, North Atlantic Ocean
RM2EN2ECA–Doto Nudibranch, Doto sp, on Hydroid, Hydrozoa Class, Bulakan Slope dive site, Seraya, Karangasem, Bali, Indonesia, Indian Ocean
RMW7RECE–Mixed assemblage of jellyfish, mainly cross jellyfish (Earleria cellularia), at the surface. Browning Pass, Port Hardy, Vancouver Island, British Columbia, Canada. Pacific Ocean.
RM2KDJW7N–Mass of the hydroid Amphibetia operculata
RMWXX69N–Colonies of hydrozoans. Underwater backgrounds of the Canary Islands, Tenerife.
RM2HCNKA0–Hydroid decorator crab, Hyastenus sp. uses hydroids for camouflage and defense, Alor, Nusa Tenggara, Indonesia, Pacific
RF2J67DEX–sea raft, (Velella velella), a cosmopolitan free-floating hydrozoan, washed up en masse on the beach.
RMT81MP0–Ernst Haeckel, Siphonophorae, Hydrozoa
RM2GXBY3B–Crystal jellyfish (Aequorea victoria)
RF2A014HP–Blue bottle, Portuguese man of war, or floating terror jellyfish in water
RM2BF2DJT–Hydrozoa. Hydrozoa Tissue for extract taken - GSPlate CURI14 P04; A0417 Jun 20161
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