ABSTRACT. – Cuttlefish eggs provide useful material for studies devoted to cephalopod embryology. Live observations of embryogenesis are particularly easy given the large size of the embryo. The eggs are readily obtained when aquarium maintenance of field-collected adults or laboratory culture of cuttlefish are possible. Setting up such a culture allows one to obtain eggs year round, in contrast to field collection of eggs (by trawling, dredging, diving) which is restricted to certain periods of the year. Beach-collected eggs should be used with caution since they may have been exposed to adverse temperature conditions before collection. A careful study of such adverse effects obtained under controlled experimental conditions, however, may provide important information on developmental mechanisms involved in ecological adaptation and evolutionary change.