system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If fish are cold blooded, how do some species function at depths of over 900 meters where the temperatures are 0-3 degrees celsius?
gpt
Fish have a unique chemistry. It has been determined that often their blood is similar to antifreeze. This makes them able to function at colder temperatures than a lake trout or some similar surface water species.