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  2. Tobago Cays - Wikipedia

    en.wikipedia.org/wiki/Tobago_Cays

    Snorkelling and scuba diving is a popular activity within the park, there are four local dive shops in the surrounding islands – the most popular sites for scuba diving are Mayreau Gardens, Horseshoe Reef and World's End Reef.

  3. Discounts and allowances - Wikipedia

    en.wikipedia.org/wiki/Discounts_and_allowances

    Discounts and allowances are reductions to a basic price of goods or services.. They can occur anywhere in the distribution channel, modifying either the manufacturer's list price (determined by the manufacturer and often printed on the package), the retail price (set by the retailer and often attached to the product with a sticker), or the list price (which is quoted to a potential buyer ...

  4. Marine food web - Wikipedia

    en.wikipedia.org/wiki/Marine_food_web

    Studies on the influence of guano on tropical marine ecosystems suggest nitrogen from guano enriches seawater and reef primary producers. [ 90 ] [ 93 ] [ 94 ] Reef building corals have essential nitrogen needs and, thriving in nutrient-poor tropical waters [ 95 ] where nitrogen is a major limiting nutrient for primary productivity, [ 96 ] they ...

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  6. Marine ecosystem - Wikipedia

    en.wikipedia.org/wiki/Marine_ecosystem

    An atoll lagoon is a circular coral reef or several coral islands that surround a lagoon. ... [30 ] [31] [32] and ... This means participating countries share ...

  7. Southeast Asian coral reefs - Wikipedia

    en.wikipedia.org/wiki/Southeast_Asian_coral_reefs

    On September 24, 2007, Reef Check (the world’s largest reef conservation organization) stated that only 5% of Philippines' 27,000 square-kilometers of coral reef are in “excellent condition" : Tubbataha Reef, Marine Park in Palawan, Apo Island in Negros Oriental, Apo Reef in Puerto Galera, Mindoro, and Verde Island Passage off Batangas.

  8. Environmental issues with coral reefs - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues_with...

    By 2008, the IUCN had assessed all 845 known reef-building corals species, marking 27% as Threatened, 20% as near threatened, and 17% as data deficient. [113] The coral triangle (Indo-Malay-Philippine archipelago) region has the highest number of reef-building coral species in threatened category as well as the highest coral species diversity ...

  9. Great Barrier Reef - Wikipedia

    en.wikipedia.org/wiki/Great_Barrier_Reef

    [30]: 7 During this time, some of the reef's islands were mined for deposits of guano, and lighthouses were built as beacons throughout the system. [30]: 452 as in Raine Island, the earliest example. [118] In 1922, the Great Barrier Reef Committee began carrying out much of the early research on the reef. [30]: 9