![](https://www.moldychum.com/wp-content/uploads/2021/07/shutterstock_297407741.jpg)
Sometimes you run across an aspect of reality and it just completely blows your mind. You’ve heard of dark matter, right? Well, meet dark fish: biologists suspect that up to 95% of the world’s total fish population lives in a deep layer of the ocean that is difficult to detect and we know little about.
LINK (via: Kotke)