
TODAY I HAVE COME WITH SOMETHING INTERESTING AS.....
**Octopuses Have Three Hearts and Blue Blood**
Octopuses aren’t just strange-looking—they’re biologically fascinating. They have **three hearts**: two pump blood to the gills, and one pumps it to the rest of the body. But that’s not all—their blood is **blue**, not red. This is because instead of iron (like in our hemoglobin), their blood contains **copper-based hemocyanin**, which works better for oxygen transport in cold, low-oxygen environments like deep oceans.
And here's a bonus: when an octopus swims, the heart that pumps blood to the body **actually stops beating**—which is one reason they prefer crawling to swimming!