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Galaxea Paucisepta
''Galaxea'' is a genus of colonial stony corals in the family Euphylliidae. Common names include crystal, galaxy, starburst and tooth coral. They are abundant on reefs in the Indo-Pacific region and the Red Sea.Family Oculinidae: ''Galaxea'' Horizon. Retrieved 2011-12-16. They are found in water less than deep and favour turbid sites. They are sometimes kept in .''Galaxea'' Tidal Gardens. Retrieved 2011-12-16. Description The colonies of ''Galaxea'' have various forms according to species. ''G ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxea Fascicularis
''Galaxea fascicularis'' is a species of colonial stony coral in the family Euphylliidae, commonly known as octopus coral, fluorescence grass coral, galaxy coral among various vernacular names. It is a common species on reef slopes in the Indo-Pacific region and is kept by enthusiasts in reef aquaria. Description Small colonies of ''Galaxea fascicularis'' often form low domes but as they grow, the colonies become more irregular, massively hummocky or columnar and may eventually reach across. The corals are the calcareous skeletons of polyps and the variability in shape is at least partly caused by the activities of horse mussels (''Lithophaga spp.'') which bore into the skeletons.Galaxy coral Animal-World. Retrieved 2011-12-16. The individual polyps are embedded in circular, tube-shaped |
Protist
A protist () is any eukaryotic organism (that is, an organism whose cells contain a cell nucleus) that is not an animal, plant, or fungus. While it is likely that protists share a common ancestor (the last eukaryotic common ancestor), the exclusion of other eukaryotes means that protists do not form a natural group, or clade. Therefore, some protists may be more closely related to animals, plants, or fungi than they are to other protists. However, like the groups ''algae'', ''invertebrates'', and '' protozoans'', the biological category ''protist'' is used for convenience. Others classify any unicellular eukaryotic microorganism as a protist. The study of protists is termed protistology. History The classification of a third kingdom separate from animals and plants was first proposed by John Hogg in 1860 as the kingdom Protoctista; in 1866 Ernst Haeckel also proposed a third kingdom Protista as "the kingdom of primitive forms". Originally these also included prokaryote ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxea Paucisepta
''Galaxea'' is a genus of colonial stony corals in the family Euphylliidae. Common names include crystal, galaxy, starburst and tooth coral. They are abundant on reefs in the Indo-Pacific region and the Red Sea.Family Oculinidae: ''Galaxea'' Horizon. Retrieved 2011-12-16. They are found in water less than deep and favour turbid sites. They are sometimes kept in .''Galaxea'' Tidal Gardens. Retrieved 2011-12-16. Description The colonies of ''Galaxea'' have various forms according to species. ''G ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxea Astreata
Gallery File:Galaxea astreata, Koh Phangan.jpg File:Galaxea-astreata-close.jpg, File:Galaxea-astreata-1.jpg File:Coral (Galaxea Astreata).png Overview (Lamark, 1816) ''Galaxea astreata'' is a common and cosmopolitan large polyp scleractinian coral, (stony, hard coral) in the family ''Euphylliidae''. It has a sub-massive morphology. It is found in the Indo-Pacific and is the most abundant coral species in Xuwen Coral Reef National Nature Reserve. ''G. astreata'' is acclimatized to water temperatures ranging from about 27 ± 0.5 °C. It is generally a shallow-water coral and is commonly seen at a depth of around 15 meters. It can range from a depth of 1 meter to 30 meters. It generally prefers clear, salt waters over turbid brackish waters. Description ''Galaxea astreata'' has a very distinctive skeleton structure, which is made of calcium carbonate (CaCO3). Corallites, the skeletal cup formed by individual polyps, are very plate-like. They are about 3-4.5 in diamet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxea Alta
''Galaxea'' is a genus of colonial stony corals in the family Euphylliidae. Common names include crystal, galaxy, starburst and tooth coral. They are abundant on reefs in the Indo-Pacific region and the Red Sea.Family Oculinidae: ''Galaxea'' Horizon. Retrieved 2011-12-16. They are found in water less than deep and favour turbid sites. They are sometimes kept in .''Galaxea'' Tidal Gardens. Retrieved 2011-12-16. Description The colonies of ''Galaxea'' have various forms according to species. ''G ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxea Acrhelia
''Galaxea acrhelia'' is a large polyp stony coral in the family Euphylliidae Euphylliidae (Greek eu-, true; Greek phyllon, leaf) are known as a family of polyped stony corals under the order Scleractinia. This family consists of multiple genera (more than one genus) and various species which are found among the ocean f .... Distribution It can be found uncommonly throughout the Indo-West Pacific with populations concentrating in Indonesia, the Philippines, Papua New Guinea, and the Solomon Islands. References Euphylliidae Animals described in 2000 {{scleractinia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnidocyte
A cnidocyte (also known as a cnidoblast or nematocyte) is an explosive Cell (biology), cell containing one large secretory organelle called a cnidocyst (also known as a cnida () or nematocyst) that can deliver a sting to other organisms. The presence of this cell defines the phylum Cnidaria (corals, sea anemones, Hydra (genus), hydrae, jellyfish, etc.). Cnidae are used to capture prey and as a defense against predators. A cnidocyte fires a structure that contains a toxin within the cnidocyst; this is responsible for the stings delivered by a cnidarian. Structure and function Each cnidocyte contains an organelle called a cnida, cnidocyst, nematocyst, ptychocyst or spirocyst. This organelle consists of a bulb-shaped capsule containing a coiled hollow tubule structure attached to it. An immature cnidocyte is referred to as a cnidoblast or nematoblast. The externally oriented side of the cell has a hair-like trigger called a cnidocil, which is a mechano- and chemo-receptor. When ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
