embryonic period To the Question of Histopathological Disorders of the Kidney of the Caspian Seal (Phoca caspica Gmelin, 1788) in the System «Mother–Fetus» Authors: Volodina V. V., Grushko M. P., Fedorova N. N. In this work we present these histological examination of the kidneys of pregnant females Caspian seals and their fetuses. In the renal tissue of Mature females seals were marked signs of chronic glo- merulonephritis and amyloidosis.