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Coral

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A coral outcrop on the  Great Barrier Reef ,  Australia Corals  are  marine invertebrates  within the  class   Anthozoa  of the  phylum   Cnidaria . They typically live in compact  colonies  of many identical individual  polyps . Corals species include 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 characteristic of the species. Individual heads grow by  asexual reproduction  of polyps. Corals also breed sexually by  spawning : polyps of the same sp...
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Hainan gibbon

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Species  -  Latest posts  /  Genres  -  Latest posts  /  Animals  -  Latest posts  /  Mammals Hainan gibbon The Hainan black-crested gibbon or Hainan gibbon (Nomascus hainanus), is a species of gibbon found only on Hainan Island, China. It was formerly considered a subspecies of the eastern black crested gibbon (Nomascus nasutus) from Hòa Bình and Cao Bằng provinces of Vietnam and Jingxi County in Guangxi Zhuang Autonomous Region, China. Molecular data, together with morphology and call differences, suggest it is a separate species. Its habitat consists of broad-leaved forests and semi-deciduous monsoon forests. It feeds on ripe, sugar-rich fruit, such as figs (Ficus spp.) and, at times, leaves, and insects. Current status Hainan black-crested gibbons are under grave threat of extinction. They are currently identified as critically endangered on the International Union for Conservation of Nature’s Red List. Historically, they w...
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