Description: The plant and animal kingdom of Baykal is extraordinarily rich. It is at present known 1550 forms and the varieties of animal, 1085 plant organisms. From the algae are most multi-number diatomaceous, from animals - [golomyanko]-[bychkovye] fishes, [bokoplavy].
In Baykal 848 forms of endemic (i.e. unique) animals and 133 forms of unique plants. Scientists Baikal fauna is in the opinion earliest, that consists of the sea and fresh-water forms, that was isolated in the independent [zoogeograficheskie] objects.
Millions years ago, after the sequential cataclysm, which shook young Baikal ridge, flat lake with the sandy shores, with their southern forms of the life (to the glacial period they were here subtropics) fell through in the break of the earth. Basin was gradually filled up with new waters and in the locked rock cup- the ancient forms of animals and plants were preserved.
There is one additional theory, that Baykal - beginning one more, fifth ocean: its shore they disperse yearly moving away one from another approximately on 2 cm per year.