Why the organism in the pond community are unlikely to survive when they are transfer to the sea?

Organisms in a pond community are adapted to specific freshwater conditions, including temperature, salinity, and nutrient levels that differ significantly from those in the sea. The high salinity of seawater can cause osmotic stress, leading to dehydration and cellular damage in freshwater species. Additionally, differences in food sources, predation pressures, and competition in marine environments can further challenge their survival. Consequently, these adaptations make it difficult for pond organisms to thrive in the vastly different conditions of the ocean.