Bonelliidae

	Bonelliidae Bonelliidae is a family of marine worms (Class Echiura, phylum Annelida) noted for being sexually dimorphic, with males being tiny in comparison with the females. They occupy burrows in the seabed in many parts of the world's oceans, often at great depths. Characteristics Members of the class Echiura are plump, unsegmented worms, commonly known as spoonworms. The mouth is at the anterior end of the trunk and a flattened proboscis extends forward in front of the mouth. The ventral side of the proboscis has a ciliated channel along which food particles and mucus are moved towards the mouth. Close behind the mouth are two hooked chaetae and one or two nephridial pores. The gut is much longer than the body and is folded and coiled inside the coelom (body cavity). The anus is at the posterior end of the body and two anal vesicles with ciliated funnels open into the cloaca. In the family Bonelliidae, the females are very much larger than the dwarf males, and in most, if not all, inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Echiura The Echiura, or spoon worms, are a small group of marine animals. Once treated as a separate phylum, they are now considered to belong to Annelida. Annelids typically have their bodies divided into segments, but echiurans have secondarily lost their segmentation. The majority of echiurans live in burrows in soft sediment in shallow water, but some live in rock crevices or under boulders, and there are also deep sea forms. More than 230 species have been described. Spoon worms are cylindrical, soft-bodied animals usually possessing a non-retractable proboscis which can be rolled into a scoop-shape to feed. In some species the proboscis is ribbon-like, longer than the trunk and may have a forked tip. Spoon worms vary in size from less than a centimetre in length to more than a metre. Most are deposit feeders, collecting detritus from the sea floor. Fossils of these worms are seldom found and the earliest known fossil specimen is from the Upper Carboniferous ( Pennsylvanian). T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Bonelliidae Bonelliidae is a family of marine worms (Class Echiura, phylum Annelida) noted for being sexually dimorphic, with males being tiny in comparison with the females. They occupy burrows in the seabed in many parts of the world's oceans, often at great depths. Characteristics Members of the class Echiura are plump, unsegmented worms, commonly known as spoonworms. The mouth is at the anterior end of the trunk and a flattened proboscis extends forward in front of the mouth. The ventral side of the proboscis has a ciliated channel along which food particles and mucus are moved towards the mouth. Close behind the mouth are two hooked chaetae and one or two nephridial pores. The gut is much longer than the body and is folded and coiled inside the coelom (body cavity). The anus is at the posterior end of the body and two anal vesicles with ciliated funnels open into the cloaca. In the family Bonelliidae, the females are very much larger than the dwarf males, and in most, if not all, inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Bonellia Viridis ''Bonellia viridis'', the green spoonworm, is a marine worm (class Polychaeta , phylum Annelida) noted for displaying exceptional sexual dimorphism and for the biocidal properties of a pigment in its skin.Murina, G. (2008). Bonellia viridis Rolando, 1821. In: Read, G.; Fauchald, K. (Ed.) (2016). World Polychaeta database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=110363 on 2016-05-28 Distribution The species is wide-ranging, found in the north-eastern Atlantic Ocean and the Mediterranean Sea. Description The pale- to dark-green female, with a 15 cm-long, round or sausage-shaped body, lives on the sea-floor at a depth of 10 to 100 metres, concealed by burrowing in gravel or hiding in rock crevasses or burrows abandoned by other animals. It has two anchoring hooks underneath its body and an extensible feeding proboscis up to 10 times its body-length. It is mainly a detritivore, feeding also on small animals. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Bonellia(annelid) ''Bonellia'' is the scientific name of several genera of organisms and may refer to: * ''Bonellia'' (annelid) Rolando, 1821, a genus of spoon worms in the family Bonelliidae * ''Bonellia'' (gastropod) Deshayes, 1838, a genus of snails in the family Eulimidae * ''Bonellia'' (plant), a genus of plants in the family Primulaceae The Primulaceae , commonly known as the primrose family (but not related to the Onagraceae, evening primrose family), are a family (biology), family of Herbaceous plant, herbaceous and woody flowering plants including some favourite garden plants ... {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Worm Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always). Worms vary in size from microscopic to over in length for marine polychaete worms (bristle worms); for the African giant earthworm, ''Microchaetus rappi''; and for the marine nemertean worm (bootlace worm), ''Lineus longissimus''. Various types of worm occupy a small variety of parasitic niches, living inside the bodies of other animals. Free-living worm species do not live on land but instead live in marine or freshwater environments or underground by burrowing. In biology, "worm" refers to an obsolete taxon, ''vermes'', used by Carolus Linnaeus and Jean-Baptiste Lamarck for all non-arthropod invertebrate animals, now seen to be paraphyletic. The name stems from the Old English word ''wyrm''. Most animals called "worms" are invertebrates, but the term is also used for the amphibian caecilians and the slowworm '' A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Plankton Plankton are the diverse collection of organisms found in Hydrosphere, water (or atmosphere, air) that are unable to propel themselves against a Ocean current, current (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a crucial source of food to many small and large aquatic organisms, such as bivalves, fish and whales. Marine plankton include bacteria, archaea, algae, protozoa and drifting or floating animals that inhabit the saltwater of oceans and the brackish waters of estuaries. Freshwater plankton are similar to marine plankton, but are found in the freshwaters of lakes and rivers. Plankton are usually thought of as inhabiting water, but there are also airborne versions, the aeroplankton, that live part of their lives drifting in the atmosphere. These include plant spores, pollen and wind-scattered seeds, as well as microorganisms swept into the air from terrestrial dust storms and oceanic plankton swept into the air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]