coral wiki:
>For other uses, see Coral (disambiguation). Scleractinia Corals are gastrovascular marine cnidarians (phylum Cnidaria; class Anthozoa) existing as small sea anemone-like polyps, typically forming colonies of many individuals. The group includes the important reef builders known as hermatypic corals, found in tropical oceans, and belonging to the subclass Zoantharia of order Scleractinia (formerly Madreporaria). The latter are also known as stony corals in as much as the living tissue thinly covers a skeleton composed of calcium carbonate. A coral "head" is formed of many individual polyps, each polyp only a few millimetres in diameter. The colony of polyps functions essentially as a single organism by sharing nutrients via a well developed gastrovascular network, and the polyps are clones, each having the same genetic structure. Each polyp generation grows on the skeletal remains of previous generations, forming a structure that has a shape characteristic of the species, but subject to environmental influences.
See more at Wikipedia.org...
polar bear wiki:
>"Polar Bear" is also the name of White Bear Township, Minnesota and a trade name for a type of scuba diver's warm undersuit to be worn under a drysuit. The Polar Bear (Ursus maritimus), also known as white bear or northern bear, is a large bear native to the Arctic. It is the largest land carnivore species. It is the apex predator within its range. It is well-adapted to its habitat: its thick blubber and fur insulate it against the cold, its white color camouflages it from its prey, and it hunts well both on land and in the water.
See more at Wikipedia.org...