The researchers studied how different diets and settlement cues affect the survival and growth of sea urchin post-larvae. They found that larvae fed Dunaliella tertiolecta and Chaetoceros gracilis had the highest survival rates. Post-larvae grew larger when settled on natural biofilm. Having conspecifics around increased larval settlement. Using Ulvella lens as a settlement cue was effective, but more research is needed for post-larvae feeding. These findings can help improve sea urchin hatchery production methods.