This study is focused on the elucidation of some aspects regarding the endo- and ecoparasite fauna specific for the Danube Delta’s cormorants. The researches on the two species of cormorants (Phalacrocorax carbo and Phalacrocorax pygmaeus) had as main purpose the specification of the helmitofauna’s etiology, epidemiology and micro- ecology present to the 2 studied species