Corals are marine invertebrates in the class Anthozoa of phylum Cnidaria. They typically live in compact colonies of many identical individual polyps. The group includes the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton.
A coral "group" is a colony of myriad genetically identical polyps. Each polyp is a sac-like animal typically only a few millimeters in diameter and a few centimeters in length. A set of tentacles surround a central mouth opening. An exoskeleton is excreted near the base. Over many generations, the colony thus creates a large skeleton that is characteristic of the species. Individual heads grow by asexual rep
The Afghan Hound is thought to be one of the oldest of all domestic Dog breeds, with the first records of the Afghan Hound dating back to 4,000 BC. The fast and agile nature of this Dog meant that they made excellent hunters of small game in their native Afghanistan, most commonly hunting Deer, Goats, Gazelle and Wild Boar along with seeing off larger predators such as Wolves and Snow Leopards. Their gentle nature also made this elegant sight-hound a doting shepherd, fearlessly protecting livestock from hungry predators. This beautiful but gently natured watchdog was brought to Britain in the early 1920s and it's entry to the USA followed in 1926. The elegance of the Afghan Hound meant that
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There are around 100 different species of angelfish that inhabit the waters of the southern hemisphere. There are two main types of angelfish, those that live in the freshwater rivers in South America (freshwater angelfish) and those angelfish that inhabit the salty ocean waters (marine angelfish).
The freshwater angelfish has a more triangular shape and will generally only grow to a few inches in length. The marine angelfish can grow up to 12 inches (the same length as a big ruler) and generally have very brightly coloured markings but the exact colours depend on the angelfish species.
Both the freshwater angelfish and the marine angelfish are known to be relatively difficult fi
