Why do crops not grow when they are flooded with sea water?

Crops do not grow well when flooded with seawater because the high salinity of seawater creates osmotic stress, making it difficult for plants to absorb water and nutrients. The excess salt can also lead to ion toxicity, disrupting cellular functions and damaging plant tissues. Additionally, the saline environment can hinder seed germination and root development, ultimately stunting growth or causing plant death.