Tiere
8 cards from across every topic, each citing a source. Tap one to open it in the feed.
- A shark older than the United States.
Greenland sharks live in the cold North Atlantic and grow less than a centimeter per year. In 2016, researchers …
- An animal that simply regrows a lost leg.
The axolotl, a Mexican salamander, regenerates entire limbs, parts of its heart and even sections of its brain, without …
- An octopus has three hearts and blue blood.
Two hearts push blood through the gills; the third supplies the body. That body heart stops while the animal swims …
- How a bat catches a mosquito in pitch darkness.
The bat calls in ultrasound, depending on species between 11 and 212 kilohertz, well above your hearing. From the delay …
- The largest animal that ever lived is alive today.
Blue whales reach nearly 30 meters and up to around 190 tonnes, heavier than any known dinosaur. A blue whale heart …
- This animal survived exposure to open space.
Tardigrades are mostly under a millimeter long and shrug off almost anything: vacuum, temperatures near -272 °C, brief …
- This crow builds hooks to get its lunch.
New Caledonian crows bend twigs into hooks and cut serrated probes from pandanus leaves to fish grubs out of wood. They …
- This shrimp punches faster than you can blink.
Mantis shrimp fling their clubs forward at over 80 km/h, cracking snail shells and, rarely, even aquarium glass. The …