The total area of its more than 50 islands is 36 km². The largest island is also called Valaam. Other known islands are: Skitsky (second by size), Lembos, Sviatoy, Bayonny, Moskovsky, Predtechensky, Nikonovsky, Divny, Emelyanov, Oboronny, Goly, Savvaty's, Zosima's, Skalisty, Lukovy, Ovsiany, Rzhanoi, Nikolsky.