Oceania South Pacific

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CORAL APLYSINA FISTULARIS Yellow Tube Sponge Protection Reef Silver Coin 1$ Tuvalu 2011


A series of collector coins dedicated to the preservation of coral reefs. The second coin in the series represents the "Yellow Tube Sponge", scientific name Aplysina Fistularis; it's a type of coral that lives abundant in the Caribbean, from Florida to Venezuela. Soft-walled tubes, usually in clusters joined at the base, in natural light, especially in deeper water, they appear to be yellow-green.

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Aplysina Fistularis - CORAL REEF
Yellow tube sponges get their name from their hollow, chimney-like body form. They pump huge quantities of water through their bodies, filtering out the tiny particles on which they feed. At shallow depths yellow tube sponges have a shape which resembles a cactus. In deeper waters, the sponges develop long, straight tubes. Inhabit reefs in open water areas and are often growing on vertical walls.
Their vivid yellow colour is probably due to special fluorescent pigments in the sponge tissue; in natural light, especially in deeper water, they appear to be yellow-green.

  • CountryTuvalu
  • Year2011
  • Face Value1 Dollar
  • MetalSilver
  • Fineness (purity)925/1000
  • Weight (g)15.57 (1/2 oz)
  • Diameter (mm)35
  • QualityProof
  • Mintage (pcs)1.000
  • Certificate (COA)Yes
  • Presentation case (box)Yes
On the reverse of the coin we find the image of the beautiful coral with his splendid, vivid, yellow color represented in detail by the enamelling technique. Around it, is represented in relief the seabed of the Caribbean sea, the habitat of coral. We find also the series name "Coral Protection", the scientific name of coral Aplysina Fistularis, more commonly known as Yellow Sponge Tube, below the year of issue. The obverse of the coin, in the central part, depicts the effigy of Queen Elizabeth II, the nominal value and the country where the coin was minted. The coin is enclosed in a box decorated with the color image of the coral.