Sources

Geography: 

https://ru.wikipedia.org/wiki/%D0%A8%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD:%D0%9F%D0%BE%D0%B7%D0%9A%D0%B0%D1%80%D1%82%D0%B0_%D0%A0%D0%BE%D1%81%D1%81%D0%B8%D1%8F_%D0%9A%D0%B8%D1%80%D0%BE%D0%B2%D1%81%D0%BA%D0%B0%D1%8F_%D0%BE%D0%B1%D0%BB%D0%B0%D1%81%D1%82%D1%8C

https://www.google.com/url?sa=i&url=https%3A%2F%2Ffotostrana.ru%2Fpublic%2Fpost%2F234965%2F777104921%2F&psig=AOvVaw3GCNtOqk7rMrc4Tnh93zFh&ust=1649071991007000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCNC0iYTm9_YCFQAAAAAdAAAAABAD

https://www.google.com/url?sa=i&url=https%3A%2F%2Fru.wikipedia.org%2Fwiki%2F%25D0%2591%25D1%2583%25D1%2588%25D0%25BA%25D0%25BE%25D0%25B2%25D1%2581%25D0%25BA%25D0%25B8%25D0%25B9_%25D0%25BB%25D0%25B5%25D1%2581&psig=AOvVaw36fNRWI20zy83eh2XVEDFB&ust=1649072092370000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCLjJwrXm9_YCFQAAAAAdAAAAABAD

https://ru.wikipedia.org/wiki/%D0%A8%D0%B0%D0%B9%D1%82%D0%B0%D0%BD_(%D0%BE%D0%B7%D0%B5%D1%80%D0%BE)

Legend:

https://www.tourister.ru/world/europe/russia/city/urzum/lakes/33215

https://stihi.ru/2015/11/21/2829

https://travelask.ru/blog/posts/37233-shaytan-ozero-i-ego-kochuyuschie

Flora of Lake Shaitan:

https://ru.wikipedia.org/wiki/Большая_выпь

https://ru.wikipedia.org/wiki/Мнемозина_(бабочка)

https://zooclub.ru/invertebrata/mollusca/ulitka-plastinchataya-cochlodina-laminata.shtml

https://en.wikipedia.org/wiki/File:Ena_montana.jpg

https://priroda.kirovreg.ru/activities/protection-of-areas-and-species/regional-pas/state-nature-reserves/boskovski-forest/

Ichthyology and botany:

https://ozera.info/russia/po/kirov/shaitan

https://www.google.com/search?q=%D1%89%D1%83%D0%BA%D0%B0&rlz=1C1GCEA_enRU920RU920&sxsrf=APq-WBtmqiaCAEe889z12TlwUwzT5Jx8ig:1648983409090&tbm=isch&source=iu&ictx=1&vet=1&fir=boLErVj2PizN9M%252CQSmSkdj3ky6ZYM%252C_%253Bt5t4U5oEoUj1hM%252C9R_DtgE8wFD2xM%252C_%253BZkBHcpA97_xf8M%252CefCm3PNR6HzFAM%252C_%253BOP40rFLmdegqXM%252C4LAti6EqOrRXpM%252C_%253BsgNs0dwZwvrBMM%252CtSgWxv5QBR5ZoM%252C_%253BC-v4EnaeXlLaNM%252CwG7Y7uebI5jdgM%252C_&usg=AI4_-kRTbbaL7aTjPv7AyIdfDdjmW0pYvg&sa=X&sqi=2&ved=2ahUKEwjhjdvy3ff2AhXIQc0KHY2iD-kQ_h16BQiDARAB#imgrc=ZkBHcpA97_xf8M

https://www.google.com/url?sa=i&url=https%3A%2F%2Fru.wikipedia.org%2Fwiki%2F%25D0%25A0%25D0%25B5%25D1%2587%25D0%25BD%25D0%25BE%25D0%25B9_%25D0%25BE%25D0%25BA%25D1%2583%25D0%25BD%25D1%258C&psig=AOvVaw05PYldSpnrpTuTh7RawHEe&ust=1649069875836000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCJD69ZPe9_YCFQAAAAAdAAAAABAD

https://www.google.com/url?sa=i&url=http%3A%2F%2Ffishology.ru%2Ffish%2Fpost%2F30-karas&psig=AOvVaw1PcexAvDPfg8lXkxmzWKle&ust=1649069933885000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCJDRha_e9_YCFQAAAAAdAAAAABAD

https://www.google.com/url?sa=i&url=https%3A%2F%2Fgdekluet.ru%2Fdirectory%2Ffish%2Fkarp%2F&psig=AOvVaw33MsTbRzrm1E5t03xeSHlK&ust=1649070024484000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCPCAu9re9_YCFQAAAAAdAAAAABAD

https://www.google.com/url?sa=i&url=http%3A%2F%2Fnrk.kipk.ru%2Fbody%2Fpie%2Fbody%2F6%2Fbogs%2F%25D0%25B3%25D0%25B8%25D0%25BF%25D0%25BD%25D0%25BE%25D0%25B2%25D1%258B%25D0%25B9.htm&psig=AOvVaw3dUKORQwnjVVc9nt9UKdSv&ust=1649070352287000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCOiTmPjf9_YCFQAAAAAdAAAAABAE

https://www.google.com/url?sa=i&url=https%3A%2F%2Fshop.evalar.ru%2Fencyclopedia%2Fitem%2Fsabelnik%2F&psig=AOvVaw3Ffdg17tBTyt338_Xmv7bN&ust=1649070465969000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCIijqKzg9_YCFQAAAAAdAAAAABAD

https://www.google.com/url?sa=i&url=https%3A%2F%2Fru.wikipedia.org%2Fwiki%2F%25D0%2592%25D0%25B0%25D1%2585%25D1%2582%25D0%25B0_(%25D1%2580%25D0%25B0%25D1%2581%25D1%2582%25D0%25B5%25D0%25BD%25D0%25B8%25D0%25B5)&psig=AOvVaw2BkpzpxSR-PKx1heBuVoCP&ust=1649070701939000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCLjR5Jzh9_YCFQAAAAAdAAAAABAD