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RMM49FBT–Aggregation of Golden jellyfish (Mastigias sp.) in a marine lake in Palau, the golden colour of this species comes from symbiotic algae in its tissues. Jellyfish Lake, Eil Malk island, Rock Islands, Palau. Tropical north Pacific Ocean.
RMG5X6TX–zoology / animals, cnidaria, true jellyfish (Scyphozoa), flag jellyfish (Semaeostomeae), Desmonema annasethe, lithograph, 'Artforms of Nature' 'Kunstformen der Natur' by Ernst Haeckel, 1899 - 1904, Additional-Rights-Clearences-Not Available
RMM49H2M–Mauve stinger (Pelagia noctiluca) at the entrance of a cave, Sula Sgeir, Outer Hebrides / Western Isles, Scotland, July.
RMM49FFH–Lion's mane jellyfish (Cyanea capillata) with feeding tentacles spread swimming in the sun in shallow water. Gulen, Norway. North East Atlantic Ocean.
RMMBFNNE–Mastigias-Schirmqualle (Mastigias papua), Palau, Mikronesien | Mastigias jellyfish (Mastigias papua), Palau, Micronesia
RFW3TJW7–group of spotted jellyfishes together, floating bell jellyfish, tropical specie from the pacific ocean
RM2AADK1G–Split level of Purple crown jellyfish (Netrostoma setouchina) in shallow waters, Nukubati Island Resort, Macuata Province, Fiji, South Pacific
RM2AWCXGM–Zöology; a textbook for colleges and universities . the Anthozoa. The first con-tains the hydroid zoophytes, hydra and other less-knownanimals ; the second the true medusae or jellyfishes ; thethird the sea anemones and their relatives. Nearly allthese animals are marine, but Hydra is a common fresh- 214 ZOOLOGY water animal, and a few kinds of small fresh-watermedusoids (Hydrozoa) are known. Great excitementwas caused, many years ago, by the discovery of the firstof these medusoids in the water-lily tank in the BotanicGarden in Regents Park, London. iiydrozoa The Hydrozoa are remarkable for t
RMMA6YPN–. The elementary nervous system . 118 THE ELEMENTARY NERVOUS SYSTEM papers will find it by no means easy to separate in them fact from speculation and, consequently, it is difficult to state in exact terms Apathy's real contribution to this subject; but, however this may be, it is certainly true that the appearance of his publications excited others to a further investigation of the subject with the result that nerve-nets were proved to exist in a number of animals. As already stated, they were definitely identified by Bethe (1903) in jellyfishes, by Wolff (1904) and by Hadzi (1909) in hydro-
RMMBFNMP–Mastigias-Schirmqualle (Mastigias papua), Palau, Mikronesien | Mastigias jellyfish (Mastigias papua), Palau, Micronesia
RFW3TJXN–swarm of floating bell jellyfishes under water, tropical jellyfish specie from the pacific ocean, marine life background
RM2AADK1F–Split level of Purple crown jellyfish (Netrostoma setouchina) in shallow waters, Nukubati Island Resort, Macuata Province, Fiji, South Pacific
RM2AWCY60–Zöology; a textbook for colleges and universities . r •:•.* •., : ., r 4f / I JT U / / ^.—>-:——^i;---.v»- —y——**i ^-^r-.fc^^^^r1. •... .< y Drawing by W. P. Bay FIG. 48. A hydra (Hydra oligactis), with two buds, a and b ; m, mouth; t, tentacleswith batteries of nematocysts; enlarged about 5 diameters. 5. The ccelenterates are divided into three great Divisions ofgroups, the Hydrozoa or Hydromedusse, the Scyphozoa Ccelenterataor Scyphomedusse, and the Anthozoa. The first con-tains the hydroid zoophytes, hydra and other less-knownanimals ; the second the true medusae or jellyfishes ; t
RMMBEKAK–Mastigias-Schirmqualle (Mastigias papua), Palau, Mikronesien | Mastigias jellyfish (Mastigias papua), Palau, Micronesia
RFW3TJWA–closeup of a spotted jellyfish, floating bell jellyfish, tropical specie from the pacific ocean
RM2AADK17–Purple crown jellyfish (Netrostoma setouchina) in the shallow waters, Nukubati Island Resort, Macuata Province, Fiji, South Pacific
RM2CD8N73–. Evolution and animal life; an elementary discussion of facts, processes, laws and theories relating to the life and evolution of animals . FIG. 195.—Torpedo or electric ray,Narcine brasiliensis, showing elec-tric cells. ADAPTATIONS 335 the stinging tentacles of the Portuguese man-of-war or underordinary jellyfishes. Some fishes called the flying fishes sail through the air witha grasshopperlike motion that closely imitates true flight.The long pectoral fins, wingiike in form, cannot, however, beflapped by the fish, the muscles serving only to expand or foldthem. These fishes live in the open
RM2AKEKEC–Thimble jellyfish (Linuche unguiculata) aggregation, My Paradise Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.
RM2AKEJKJ–Mauve Stinger jellyfish (Pelagia noctiluca) swimming past discarded plastic net. Mediterannean Sea, September.
RMPBADNW–Aggregation of Golden jellyfish (Mastigias sp.) in a marine lake in Palau, the golden colour of this species comes from symbiotic algae in its tissues. Jellyfish Lake, Eil Malk island, Rock Islands, Palau. Tropical north Pacific Ocean.
RFHY1T50–Low angle shot of Red jellyfish floating in water, food of the Leatherback turtles, Philippines.
RMF44X21–Spotted jellyfish (Mastigias papua) Inanuran Island, Danajon Bank, Central Visayas, Philippines, April
RMRD3FF0–. The elementary nervous system. Nervous system; Nervous system -- Coelenterata. 118 THE ELEMENTARY NERVOUS SYSTEM papers will find it by no means easy to separate in them fact from speculation and, consequently, it is difficult to state in exact terms Apathy's real contribution to this subject; but, however this may be, it is certainly true that the appearance of his publications excited others to a further investigation of the subject with the result that nerve-nets were proved to exist in a number of animals. As already stated, they were definitely identified by Bethe (1903) in jellyfishes,
RMF4424A–Barrel Jellyfish (Rhizostoma pulmo) against crepuscular light rays. Sark, British Channel Islands, July.
RMF13GAW–Multitudes of Moon jellyfish (Aurelia labiata), Alaska, USA, Gulf of Alaska. Pacific ocean.
RMF13GBC–Moon jellyfish (Aurelia labiata) close to the surface and under the sun rays, Alaska, USA, Gulf of Alaska. Pacific ocean.
RMREJCG0–. Cold-blooded vertebrates: part I. Fishes. Fishes; Amphibians; Reptiles. THE FIRST BACKBONES and clams, crabs and shrimps—tor none oi these animals possesses a backbone. For the same and many other reasons, starfishes and jellyfishes are not true fishes. It would simplify matters greatly if we could distinguish a fish by its shape. But the members of the class vary so much in this re- spect that it is utterly impossible to define them by the form of the body. Some are long and slen- der, resembling worms, others are very deep, short, and narrow, while still others are very flat and broad. The
RMRDHRR3–. A text-book in general physiology and anatomy. Physiology, Comparative; Anatomy. 430 THE NEEVOUS SYSTEM IN THE LOWEK ANIMALS fibers is found in the coelenterates. In the hydra are cer- tain scattered cells which are partly muscular and partly nervous in function. In the jellyfishes we find a network of fibers and cells scattered over the disk. The general purpose of such systems seems to be to give sensitiveness to the animals and thus aid them in securing food. Echinoderms.— In the starfish and its allies we have a true system. In these animals ve find a ring of five gan- glia surrounding
RMRCR0B4–. Elements of comparative zoology. Zoology. CCELENTERATA. 173 Order II.—Hexacoralla. As the name indicates, the septa and tentacles here occur in multiples of six. Here belong all the sea-anem- ones and the true corals, which produce coral-reefs and. Fig. 20.—Sea-anemone (Metridium). From Emerton. islands. The reef-building species are limited in their distribution by temperature, for they cannot live where the temperature of the water falls below 60° Fahr. (13° C.). Subclass II.—Scyphomedus^ (Jellyfishes). At first sight the Scyphomedusse differ greatly from the Actinozoa. They are free-swimm
