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Lovenella Gracilis
The epibiotic hydroid (Lovenella gracilis) is a benthic species within the Cnidaria phylum which is distributed throughout the Western Atlantic Ocean. Description ''Lovenella gracilis '' are colonial animals that form erect colonies, on hard surfaces using a hydrorhiza, stem-like structure, and reach a maximum height of around 2.3 mm. The polyp is the dominant stage of the ''L. gracilis''. They are trophosome with thin hydrocaulus that brach out alternatively to form the hydrotheca. At the end of each branch there is a conical operculum that consists of eight pieces. This structure also contains ten to twelve tentacles equipped with nematocysts that can be used in self-defense or to capture their prey. In the preliminary stages of differentiating between the ''Lovenella gracilis'' and ''Lovenella clausa'', many hydrozoas were categorized as ''Lovenella clausa--''from Northwest Europe—instead of the actual ''Lovenella gracilis''. These two hydroids were later determined t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnidaria
Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. Cnidarians mostly have two basic body forms: swimming medusae and sessile polyps, both of which are radially symmetrical with mouths surrounded by tentacles that bear cnidocytes. Both forms have a single orifice and body cavity that are used for digestion and respiration. Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like zooids, or both (hence they are trimorphic). Cnidarians' activities are coordinated by a decentralized nerve net and simple receptors. Several free-swimming species of Cubozoa and Scyphozo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chesapeake Bay
The Chesapeake Bay ( ) is the largest estuary in the United States. The Bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula (including the parts: the Eastern Shore of Maryland / Eastern Shore of Virginia and the state of Delaware) with its mouth of the Bay at the south end located between Cape Henry and Cape Charles (headland), Cape Charles. With its northern portion in Maryland and the southern part in Virginia, the Chesapeake Bay is a very important feature for the ecology and economy of those two states, as well as others surrounding within its watershed. More than 150 major rivers and streams flow into the Bay's drainage basin, which covers parts of six states (New York, Pennsylvania, Delaware, Maryland, Virginia and West Virginia) and all of District of Columbia. The Bay is approximately long from its northern headwaters in the Susquehanna River to its outlet in the Atlantic Ocea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florida Pompano
The Florida pompano (''Trachinotus carolinus'') is a species of marine fish in the '' Trachinotus'' (pompano) genus of the family Carangidae. It has a compressed body and short snout; coloration varies from blue-greenish silver on the dorsal areas and silver to yellow on the body and fins. It can be found along the western coast of the Atlantic Ocean, depending on the season, and is popular for both sport and commercial fishing. Most Florida pompano caught weigh less than and are less than long, though the largest individuals weigh and reach lengths up to . Because it is fast-growing and desirable for food, the pompano is one of the many fish that is currently being farmed through aquaculture. The Florida city of Pompano Beach is named after the Florida pompano. Description The different kinds of pompano include African, Cayenne, and Florida. The Florida pompano (''T. carolinus'') is part of the jack family. It is very similar to the permit ('' Trachinotus falcatus''). It h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ghost Crab
Ghost crabs are semiterrestrial crabs of the subfamily (biology), subfamily Ocypodinae. They are common shore crabs in tropical and subtropical regions throughout the world, inhabiting deep burrows in the intertidal zone. They are generalist species, generalist scavengers and predators of small animals. The name "ghost crab" derives from their nocturnality and their generally pale coloration. They are also sometimes called sand crabs, though the name refers to Sand crab (other), various other crabs that do not belong to the subfamily. Characteristics of the subfamily include one claw being larger than the other, thick and elongated eyestalks, and a box-like body. The differences in claw sizes, however, are not as marked as in male fiddler crabs. The subfamily includes 22 species in two genera. Taxonomy Ocypodinae is one of two subfamily (biology), subfamilies in the family (biology), family Ocypodidae, the other being the fiddler crab subfamily, Ucinae. Both subfamilies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wikipedia Student Program
Wikipedia is a multilingual free online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and using a wiki-based editing system. Wikipedia is the largest and most-read reference work in history. It is consistently one of the 10 most popular websites ranked by Similarweb and formerly Alexa; Wikipedia was ranked the 5th most popular site in the world. It is hosted by the Wikimedia Foundation, an American non-profit organization funded mainly through donations. Wikipedia was launched by Jimmy Wales and Larry Sanger on January 15, 2001. Sanger coined its name as a blend of ''wiki'' and ''encyclopedia''. Wales was influenced by the "spontaneous order" ideas associated with Friedrich Hayek and the Austrian School of economics after being exposed to these ideas by the libertarian economist Mark Thornton. Initially available only in English, versions in other languages were quickly developed. Its combined editions com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
