Here’s one: octopuses don’t just change color—they can also change the texture of their skin.
They use tiny muscles to raise or flatten bumps called papillae, letting them mimic rocks, coral, sand, or seaweed not only in color but in 3D shape.
Here’s one: a day on Venus is longer than a year on Venus.
Venus takes about 225 Earth days to orbit the Sun, but it rotates on its axis so slowly that one full rotation takes about 243 Earth days. Also, it spins backward compared to most planets, so the Sun would rise in the west and set in the east.
Here’s one: octopuses have three hearts, and two of them stop beating when they swim.
Two hearts pump blood to the gills, while the third pumps it to the rest of the body. When an octopus swims, the main heart temporarily stops, which is why swimming tires them out—many octopuses prefer crawling because it’s less exhausting.