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Message: <blockquote data-quote="COBRA_SM" data-source="post: 18896822" data-attributes="member: 512658">ආකර්ෂණීය_නිල්_සිදුරු-5 Most Impressive Blue Holes Around The World- A blue hole is an underwater sinkhole formed by the erosion of carbonate rocks and appears as a dark blue circle of water in the ocean. Blue holes are typically located in low-lying coastal regions, which were once above the sea level many thousand years ago. Intense karst activity — the process of dissolution of soluble rocks such as limestone, dolomite, and gypsum by rain water or streams — created large vertical caves. When the sea level rose due to melting of glaciers, some of these holes became submerged. Owing to their depth, blue holes appear darkish blue because of greater absorption of sunlight which increases with increase in depth. This creates a dramatic contrast with the lighter blue of the shallows around them and forms a natural outline that can be easily seen from the surface. The Great Blue Hole of Belize <img src="http://lh3.googleusercontent.com/-Dl3SwyuzH94/Vd2aGAUpflI/AAAAAAABGIM/pHKwnhp-pjk/great-blue-hole-belize-1%25255B6%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://lh3.googleusercontent.com/-RnmHBW0Y5VI/Vd2aHI1LlII/AAAAAAABGIU/GF6D25uFpVk/great-blue-hole-belize-2%25255B2%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> Dean's Blue Hole <img src="http://lh3.googleusercontent.com/-j2dvgIW71ho/Vd2aIszJNiI/AAAAAAABGIc/krgdsp4ZGP4/deans-blue-hole-3%25255B2%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://lh3.googleusercontent.com/-za1FIpWReKE/Vd2aJnsxlHI/AAAAAAABGIk/sv1c-Cexccs/deans-blue-hole-2%25255B6%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://lh3.googleusercontent.com/-DB_p_xop170/Vd2aKhqyFcI/AAAAAAABGIs/QgbKlVuJu0U/deans-blue-hole-1%25255B6%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> Blue Hole of Dahab <img src="http://lh3.googleusercontent.com/-VMrBETZyuLU/Vd2aL4pWjZI/AAAAAAABGI0/aReij0hXqfo/dahab-blue-hole-1%25255B2%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://lh3.googleusercontent.com/-yxMplINAgQQ/Vd2aNBZt3uI/AAAAAAABGI8/35FcfLwBHWY/dahab-blue-hole-2%25255B2%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://lh3.googleusercontent.com/-C_SfBVWXZO0/Vd2aOEw3JvI/AAAAAAABGJE/2KFb2AX0y6A/dahab-blue-hole-3%25255B2%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> The Blue Hole of Gozo <img src="http://lh3.googleusercontent.com/-zjHwApFcWLI/Vd2aPRYG3OI/AAAAAAABGJM/-qK87_QDOfM/gozo-blue-hole-1%25255B2%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://lh3.googleusercontent.com/-7p3rfBZwqNU/Vd2aQnySveI/AAAAAAABGJU/OFy22I8K_IQ/gozo-blue-hole-3%25255B2%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://lh3.googleusercontent.com/-Sk1ue8GgRgk/Vd2aUD9SFCI/AAAAAAABGJc/tBkq4B8qq9E/gozo-blue-hole-2%25255B6%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> Watling's Blue Hole <img src="http://lh3.googleusercontent.com/-hrGDz5k1HHA/Vd2aVetuS5I/AAAAAAABGJk/at7LcAMFQ-g/watlings-blue-hole-1%25255B2%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://lh3.googleusercontent.com/-n5Q4MW8PLi4/Vd2aWt1WTWI/AAAAAAABGJs/_0kzX3S8M9c/watlings-blue-hole-2%25255B2%25255D.jpg?imgmax=800" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="/styles/default/xenforo/smilies/default/shocked.gif"  class="smilie" loading="lazy" alt=":shocked:" title="Shocked    :shocked:" data-shortname=":shocked:" /><img src="/styles/default/xenforo/smilies/default/shocked.gif"  class="smilie" loading="lazy" alt=":shocked:" title="Shocked    :shocked:" data-shortname=":shocked:" /><img src="/styles/default/xenforo/smilies/default/shocked.gif"  class="smilie" loading="lazy" alt=":shocked:" title="Shocked    :shocked:" data-shortname=":shocked:" /><img src="/styles/default/xenforo/smilies/default/shocked.gif"  class="smilie" loading="lazy" alt=":shocked:" title="Shocked    :shocked:" data-shortname=":shocked:" /><img src="/styles/default/xenforo/smilies/default/shocked.gif"  class="smilie" loading="lazy" alt=":shocked:" title="Shocked    :shocked:" data-shortname=":shocked:" /></blockquote>

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