p. 199 - 202 DONNES CONCERNANT L'OSMOREGLAGE CHEZ CRASSOSTREA GIGAS THUNBERG. Elena Csernok et Natalia Rosoiu Institute Roumain de Recherches Marines Constanta Abstract Some data concerning the relationship between the osmotic pressure of the haemolympha and that one of the environment and in the intracellualr isosmotic regulation of Crassostrea gigas TH. At different salinities (8%, 16%, 30%) are presented. The results confirm the euryhalinity and the possibilities of osmoregulation.