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Seashell Stamp Sea Animal Marine Ocean Life Octopus Souvenir Sheet of 2 MNH
Grade: Ungraded Congo Seashell Sea Animal Marine Ocean Life Octopus Souvenir Sheet of 2 MNH Congo Seashell Sea Animal Marine Ocean Life Octopus Souvenir Sheet of 2 MNH Congo Seashell Sea Animal Marine Ocean Life Octopus Souvenir Sheet of 2 MNHCorals are ... Read More
Item Specifics
- Condition
- Mint (NH)
- Stamp Format
- Souvenir Sheet
Item Description
Grade: UngradedCongo Seashell Sea Animal Marine Ocean Life Octopus Souvenir Sheet of 2 MNH Congo Seashell Sea Animal Marine Ocean Life Octopus Souvenir Sheet of 2 MNH Congo Seashell Sea Animal Marine Ocean Life Octopus Souvenir Sheet of 2 MNHCorals 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 species release gametes simultaneously over a period of one to several nights around a full moon.Although some corals are able to catch small fish and plankton using stinging cells on their tentacles, most corals obtain the majority of their energy and nutrients from photosynthetic unicellular dinoflagellates (these are one-celled aquatic organisms bearing two dissimilar flagella and having characteristics of both plants and animals.) in the genus Symbiodinium that live within their tissues. These are commonly known as zooxanthellae. Such corals require sunlight and grow in clear, shallow water, typically at depths less than 60 metres (200 ft). Corals are major contributors to the physical structure of the coral reefs that develop in tropical and subtropical waters, such as the enormous Great Barrier Reef off the coast of Queensland, Australia.Other corals do not rely on zooxanthellae and can live in much deeper water, with the cold-water genus Lophelia surviving as deep as 3,300 metres (10,800 ft).[1] Some have been found on the Darwin Mounds, northwest of Cape Wrath, Scotland, and others as far north as off the coast of Washington State and the Aleutian Islands.Fast & Free Shipping within U.S.A. We Care for your order, Pack it carefully and ship it within 24 hours. Satisfaction Guaranteed! Please explore our store for more stamps, souvenir sheets, post-office collectibles and philately books and pre-philatelic items: meditative.philately
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- MeditativePhilately (441)
- Registered Since
- 04/09/2018
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- Meditative Philately
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- New York, United States
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- Worldwide
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