osmoconformity

Osmoconformity is a biological strategy where an organism's internal osmotic pressure matches that of its external environment. This means that as the salinity of the surrounding water changes, the salt concentration within the organism's body fluids also changes accordingly. Many marine invertebrates are osmoconformers because their cells have the same osmotic pressure as seawater. This passive adaptation allows them to avoid the energy expenditure required for active regulation of internal salt and water balance, a process known as osmoregulation. However, osmoconformers are limited to environments with stable salinity levels, as significant fluctuations can be detrimental.12