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  2. Ultrasonic antifouling - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_antifouling

    Ultrasonic algae control is a commercial technology that has been claimed to control the blooming of cyanobacteria, algae, and biofouling in lakes, and reservoirs, by using pulsed ultrasound. [ 6 ] [ 7 ] The duration of such treatment is supposed to take up to several months, depending on the water volume and algae species.

  3. Cuban underwater formation - Wikipedia

    en.wikipedia.org/wiki/Cuban_underwater_formation

    The team returned to the site a second time with an underwater remotely operated vehicle that filmed sonar images interpreted as various pyramids and circular structures made out of massive, smooth blocks of stone that resembled hewn granite. Zelitsky said, "It's a really wonderful structure which really looks like it could have been a large ...

  4. Telescopium telescopium - Wikipedia

    en.wikipedia.org/wiki/Telescopium_telescopium

    Telescopium telescopium, commonly known as the telescope snail, is a species of snail in the horn snail family Potamididae found in mangrove habitats in the Indo-Pacific. [1] They are large snails that can grow up to 8 to 10 cm (3.1 to 3.9 in) in length and are easily recognizable by their cone-shaped shell.

  5. Waste stabilization pond - Wikipedia

    en.wikipedia.org/wiki/Waste_stabilization_pond

    In most ponds both bacteria and algae are needed in order to maximize the decomposition of organic matter and the removal of other pollutants. [15] Algae produce oxygen (photosynthesis) and also consume oxygen (respiration), but they leave an excess of oxygen that can then be used by aerobic bacteria for respiration and for the processes of ...

  6. Derinkuyu underground city - Wikipedia

    en.wikipedia.org/wiki/Derinkuyu_underground_city

    Derinkuyu (Turkish pronunciation: [derˈinkuju]) [a] [b] also known as Elengubu, is an ancient multi-level underground city near the modern town of Derinkuyu in Nevşehir Province, Turkey, extending to a depth of approximately 85 metres (280 ft).

  7. Physidae - Wikipedia

    en.wikipedia.org/wiki/Physidae

    These snails are sometimes viewed as pests in aquarium tanks with fish, because the snails create waste, reproduce very often, and are very hard to remove completely. However, some aquarium owners deliberately choose to add these freshwater pond snails to their tank because the snails will eat uneaten fish food, algae and waste, as well as ...

  8. Skara Brae - Wikipedia

    en.wikipedia.org/wiki/Skara_Brae

    Skara Brae / ˈ s k ær ə ˈ b r eɪ / is a stone-built Neolithic settlement, located on the Bay of Skaill in the parish of Sandwick, on the west coast of Mainland, the largest island in the Orkney archipelago of Scotland.

  9. Costasiella kuroshimae - Wikipedia

    en.wikipedia.org/wiki/Costasiella_kuroshimae

    Costasiella kuroshimae is a selective feeder of algae from the genus Avrainvillea, [5] from which it sequesters chloroplasts into its own cells, retaining them for short-term photosynthesis. Even in the absence of active photosynthesis, chloroplasts provide a nutrient storage or "larder" that facilitates the survival of the slug without food ...