Plant species found rare in Russia and Europe yet common in other
regions of Karelia can be met in lakes and rivers of the Park. These
are, for instance, littoral species, like, water lobelia (Lobelia
dortmanna), and spring quillwort and lake quillwort (Isoёtes echinospora, J. lacustris), which are indicators of water purity.
Specific features of fish species in the Russian part of the Koitajoki
area is accounted for by naturally pure bodies of water, which
practically no longer exist in Finland.Narrow-leafed marsh-orchid
(Dactylorchiza traunstaineri) grows on the Park's mires.
molle, enlisted in the Red Data Book of Russia and considered as
endangered, belongs to those rare that can be encountered on in the
Mires and bodies of water in Tolvajarvi become rest places for migratory birds in spring and autumn. In May, Whooper Swan and Black-Throated Diver fly here to breed, and their calls can be heard at dusk and at dawn. Gray Crane and Bean Goose nest in mires. Brown Bear and other large beasts of prey, like Wolf, Wolverine and Lynx, inhabit the forestland. This region is the southernmost in Karelia where Forest Reindeer can be met.