Oceania South Pacific



0 0

PILLAR CORAL Protection Reef Silver Coin 1$ Tuvalu 2011


A series of collector coins dedicated to the preservation of coral reefs. The first coin in the series represents the "Pillar Coral", scientific name Dendrogyra Cylindricus; it is a type of hard coral that lives in the western Atlantic Ocean. It is a species of coral whose shape resembles the fingers, or a cluster of cigars, growing from the bottom of the sea, but without any secondary branching.

More details

49.95 €

-20.00 €

69.95 €

We accept payment by:

Add to wishlist


Coral reef protection is a process of maintaining a healthy coral reef. Coral reefs are fragile environments that are very vulnerable to damage from boat anchors or accidental groundings. Boaters can protect coral by dropping their anchors on sandy patches of sea bed. Accidental groundings by boats can obliterate large areas of coral reef. Lettuce corals and branching corals such as elkhorn and finger coral are extremely fragile, but even massive boulder corals can be crushed or snapped off and turned upside down to die by a sailboat keel. Groundings in sand, or even the churning action of propellers, can cause major localized siltation, indirectly killing adjacent corals.

There are two types of stresses associated with reef systems: natural and human-induced. The effects of these stresses can range from negligible to catastrophic. However, reefs are not well adapted to survive exposure to long-term stress. Some examples include agricultural and industrial runoff, increased sedimentation from land clearing, human sewage and toxic discharges.

Pillar corals (Dendrogyra cylindricus) are a type of hard coral which live in the western Atlantic Ocean. They are one of the digitate corals which resemble fingers, or a cluster of cigars, growing up from the sea floor, but without any secondary branching.

Pillar corals can grow to be up to 2.5 m (8 ft) tall. They can grow on both flat and sloping sea floors at a depth of between 1 and 20 m (65 ft). They are one of the few types of hard coral whose polyps can commonly be seen feeding during the day
Colonies are distinctive groups of tall columns, whose polyps are emerged in daytime, giving a furry appearance.
Young colonies are encrusting with short or incipient columns. The skeletal structure resembles that of Meandrina, with long meandroid corallite series although the corallites are smaller. However, the skeleton this is rarely seen in living colonies due to the extended polyps.

  • 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 coral in all its colors ranging from orange to blue, represented in detail by the enamelling technique. Around it, is represented in relief the seabed of the Atlantic Ocean, the habitat of coral. We find also the series name "Coral Protection", the scientific name of coral Dendrogyra Cylindricus, more commonly known as Pillar Coral, 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.