Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The colossal squid has the largest eyes in the world.
4
Nicole Kidman is scared of butterflies.
65