These fish survive low oxygen by converting lactic acid to ethanol, which they release through gills.
Known for enduring hypoxia, they metabolize carbohydrates anaerobically, producing ethanol as a byproduct.
Certain bats slow their metabolism during torpor, tolerating low oxygen environments in hibernation caves.
During hibernation, turtles survive low oxygen by slowing metabolism and storing lactate in their shells.
Some catfish species withstand oxygen scarcity by gulping air and storing it in special respiratory organs.
Pufferfish tolerate low oxygen by temporarily reducing metabolic rates and accessing oxygen from aquatic plants.
These microscopic organisms enter cryptobiosis, halting metabolism entirely, surviving without oxygen for extended periods.