The area of Kizhi island differs from most of other parts of Onega Lake. It is characterized by numerous small islands, which reduce the water flow, and relatively shallow and uneven lake bottom. Whereas the average depth of the lake is 31 meters, the depth is about 2�3 meters in the Kizhi and only in some places reaches 16�20 meters. Because of the weak flows and shallow depth, water is relatively warm and quiet that promotes growth of aquatic vegetation. Fish types include roaches, some gobies, Crucian carps, sabre carp, perch, ruffe, pike, Common dace, silver bream, ide, gudgeon, carp bream, spined loach, European smelt, char, pike-perch,rudd and burbot.
Along the center of the island runs a narrow ridge, which is a remnant of the ice age. It has steep slopes in some parts and is up to 22 meters tall. There are no forests on the island, but only individual trees of elm, spruce, pine, birch, aspen and alder. The trees host about 28 species of polypores (tree mushrooms), and there are more than 100 species of moss. Most of the island is covered in meadows, which are quite varied and rich in colors and species, including rare and protected. A large part of them are of legume family. Common are cow parsley, various species centaurea, tansy and verbascum densiflorum.
About 180 bird species from 15 families are known in the Kizhi area, and about 45 types of them were observed on the island. Most of them are migratory and stop on the island either for rest or nesting, such as swans, geese, ducks, lake seagulls, sterna, but there are also more stationary birds like sparrow, siskin, chaffinch, skylark, jackdaw and crow. Among animals and amphibians, there are only newts (Smooth Newt and Great Crested Newt), vipers, common lizard, frogs and toads (common frog, common toad and Moor Frog) and mice � the island is too small for larger animals which are abundant in the area.
Although Kizhi island is within a kilometer distance from major islands and