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Jellyfish. Spotted jellies swimming in a Tokyo aquarium. Jellyfish, also known as sea jellies, are the medusa -phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals with umbrella-shaped bells and trailing tentacles, although a few are ...
Helmet jellyfish. The helmet jellyfish (Periphylla periphylla), sometimes called the merchant-cap, [1] is a luminescent, red-colored jellyfish of the deep sea, belonging to the order Coronatae of the phylum Cnidaria. It is the only species in the monotypic genus Periphylla and is one of the rare examples in Scyphozoa which life-cycle lacks a ...
Cassiopea ornata are a part of the class, Scyphozoa, "the true jelly-fish." Members of this class are gonochoric. As a cnidarian, the cassiopea ornata jellyfish can reproduce both sexually and asexually. When in a medusa form, it will reproduce sexually. The male will produce sperm and release them into the water, while the female produces eggs ...
Chrysaora hysoscella. Chrysaora hysoscella, the compass jellyfish, [1] is a common species of jellyfish that inhabits coastal waters in temperate regions of the northeastern Atlantic Ocean, including the North Sea and Mediterranean Sea. [2] In the past it was also recorded in the southeastern Atlantic, including South Africa, but this was ...
Aquatic locomotion. A great cormorant swimming. Aquatic locomotion or swimming is biologically propelled motion through a liquid medium. The simplest propulsive systems are composed of cilia and flagella. Swimming has evolved a number of times in a range of organisms including arthropods, fish, molluscs, amphibians, reptiles, birds, and mammals.
Xscreensaver "GLMatrix" Screensaver. XScreenSaver is a free and open-source collection of 240+ [3] screensavers for Unix, macOS, iOS and Android operating systems. It was created by Jamie Zawinski in 1992 and is still maintained by him, with new releases coming out several times a year. [4]
The lion's mane jellyfish (Cyanea capillata) is one of the largest known species of jellyfish. Its range is confined to cold, boreal waters of the Arctic, northern Atlantic, and northern Pacific Oceans. It is common in the English Channel, Irish Sea, North Sea, and in western Scandinavian waters south to Kattegat and Øresund.
Goose Rocks Beach, Kennebunkport, Maine. Ironically while the dunes of most Maine coves are almost all rocks, you won’t spy a big one anywhere at Goose Rocks Beach. It’s lined with miles of ...