Fish Physiology Notes Site

: Physiological studies often measure heart rate and oxygen consumption to determine how fish respond to environmental stressors like temperature changes. 3. Buoyancy and Movement

Sharks utilize a different strategy called . They retain high concentrations of urea and trimethylamine oxide (TMAO) in their blood, raising their internal osmolarity slightly above that of seawater. This prevents dehydration without the need for heavy drinking. Their rectal gland functions as a salt-secreting organ. Fish Physiology Notes

Fish have evolved unique ways to "see" and "feel" their surroundings. : Physiological studies often measure heart rate and