Baikal yana cikin yankin Siberiya na Rasha. Ita ce tabki mafi zurfi a doron ƙasa kuma an cika shi da tsabta, bayyananne, ruwan sanyi. Rukunin ruwa yana da girma: yankin saman ruwa yana da murabba'in kilomita 31,722, wanda yayi daidai da yankin wasu ƙasashe, misali, Belgium.
Ruwan Baikal ya banbanta ba kawai ta hanyar ingantaccen kayan aikin hada shi da mafi karancin kazamta ba, amma kuma ta yawan iskan oxygen. Saboda wannan, duniyar karkashin ruwa ta tabki tana da bambancin gaske. Akwai nau'ikan dabbobi masu ruwa a cikin ruwa sama da dubu biyu, da rabi, wadanda rabi daga cikinsu na cikin jini (suna rayuwa ne kawai a wannan tafkin).
Dabbobi masu shayarwa
Elk
Barewa
Wolverine
Red Wolf
Biya
Lynx
Irbis
Kurege
Fox
Barguzinsky sable
Kurege
Muskrat
Vole
Altai pika
Manƙarar baƙin marmara
Boar
Roe
Reindeer
Tsuntsaye
Farar gaggafa
Sandpiper
Mallard
Ogar
Ganyayyaki
Grouse
Mikiya
Saker Falcon
Asiatic snipe
Babban maiko (crested grebe)
Cormorant
Babban curlew
Babban Mikiya Mai Haske
Mutum mai gemu
Gabas Marsh Harrier
Tsaunin dutse
Snipe na dutse
Daursky crane
Derbnik
Dogayen yashi mai yatsa
Mazaunan ruwa
Baikal hatimi
Farin kifi
Lenok
Taimen
Davatchan
Golomyanka
Omul
Baikal sturgeon
Black Baikal launin toka
Red broadhead
Yellowfly goby
Arctic char
Pike
Kuka
Ide
Siberian dace
Tafkin kankara
Siberian roach
Siberian gudgeon
Kifin Zinariya
Amur kifi
Tench
Siberiya spiny
Kifin kifin Amur
Burbot
Rubutun Rotan
Kwari
Kyawawan yarinya japanese
Askalaf na Siberia
Tsuntsun dawakin dare
Duvet mai laushi
Baikal abia
Dabbobi masu rarrafe
Toaure gama gari
Misalin mai gudu
Talakawa tuni
Liadangaren Viviparous
Shitomordnik na kowa
Kammalawa
Fauna na Tafkin Baikal ba wai kawai ya kunshi dabbobi na cikin ruwa ba, kifi da masassara, amma har da faunan yankin bakin teku. Tabkin yana kewaye da gandun dajin ta Siberia da tsaunuka masu yawa, wanda ke nufin cewa akwai dabbobin gargajiya na wannan yankin: bear, fox, wolverine, musk deer da sauransu. Wataƙila mafi ban mamaki da martaba na wakilcin fauna na yankin bakin ruwa na Tafkin Baikal shine mai badawa.
Komawa zuwa duniyar karkashin ruwa, ya zama dole a kula da yanayin gargajiya - hatimin Baikal. Nau'in hatimi ne kuma yana cikin ruwan Tafkin Baikal tsawon shekaru da yawa. Babu wani wuri a duniya da akwai irin wannan hatimin. Wannan dabbar abu ce ta kamun kifi kuma a duk tsawon lokacin kasancewar mutum a bakin tafkin Baikal, ana amfani dashi don abinci. Hatimin Baikal ba nau'in haɗari bane wanda ke cikin haɗari, kodayake, farautarsa ana iyakantata don rigakafi.
A gefen Tafkin Baikal, dabba mafi ƙarancin dangin cat suna rayuwa - damisa mai dusar ƙanƙara ko irbis. Adadin mutane ƙanƙane ne kuma sun kai mutane da yawa. A waje, wannan dabba tana kama da lynx, amma a lokaci guda ya fi girma kuma yana da kyakkyawa, kusan fararen fata tare da alamun baki.