In the cold waters of Antarctic waters, there is a unique kind of fish  Their blood and body fluids contain an antifreeze protein, which is why they have survived and evolved so far  But today, the survival of this kind of fish is facing great challenges
The oxygen content in Antarctic seawater decreases with the increase of temperature. Hypoxia leads to the degeneration of antifreeze protein, which is easy to deposit in blood vessels, resulting in insufficient blood supply, so as to shorten the life of fish
 Some people believe that this is caused by the warming of seawater