the hard, variously colored, calcareous skeleton secreted by certain marine polyps. 2. such skeletons collectively, forming reefs, islands, etc. 3. the solitary or colonial polyp that secretes this calcareous skeleton.
Ancient methanogens are the source of natural gas. Halophiles are bacteria that thrive in high salt concentrations such as those found in salt lakes or pools of sea water. Thermophiles are the heat-loving bacteria found near hydrothermal vents and hot springs.
The Kingdom Archaebacteria consists of bacteria found in harsh environments such as those that are extremely salty or hot. Bacteria in this kingdom have cell walls made without peptidoglycan.It is part of the Domain Archae.ingdom: Archaebacteria Fast FactPhylum: Euryarchaeota Organisms in the genus Picrophilus are currently the most acidophilic organisms currently known.Class: ThermoplasmataOrder: ThermoplasmatalesFamily: PicrophilaceaeGenus: PicrophilusSpecies: oshimae.