  The polar ring galaxies (PRGs) represent an interesting type of peculiar
systems in which the outer matter is rotating in the plane which is roughly
perpendicular to the disk of the main galaxy. Despite the long lasting study of
the PRGs there is a lack of the detailed enough observational data, there are
still many open questions. Among the most interesting issues there are the
estimate of the flattening of the dark matter halos in these systems and the
verification of the assumption that the most massive polar structures were
formed by the accretion of the matter from the intergalactic filaments. The new
catalog recently collected by our team using the SDSS images increased by
several times the number of known PRGs. The current paper gives the overview of
our latest results on the study of morphological and photometric structure of
the PRGs. Using the stellar and ionized gas kinematics data based on spectral
observations with the Russian 6-m telescope we estimate the dark matter halo
shape in the individual galaxies.
