Abstract:The sea urchin,Hemicentrotus pulcherrimus,an economically important species in Northern Chinese littoral benthic systems, has been heavily exploited by local fisheries in recent decades. Despite this fact, basic knowledge of the urchin‘s feeding biology is still scarce. Experimental feeding ecology studies of H. pulcherrimus focused on food preference, food consumption and assimilation, feeding activity in this paper. The sea urchins used in the studies were sampled by diving from the shallow subtidal zone ...