Octopuses and Cephalopods
Eight arms, three hearts, blue blood, and a skin that doubles as a mood ring and a disguise kit.
Apex Predators
Bring wolves back to Yellowstone, as happened in 1995, and the park's rivers end up changing course. Ecology is wild.
Mammals
If you have fur, milk, or a cat, you are in the club, and so is a blue whale.
Animal Migration
A single bird species that logs roughly 44,000 miles a year chasing summer between the Arctic and Antarctic — the longest migration of any animal on Earth.
Animal Communication
A honeybee returning to the hive can tell its colony the exact direction and distance of a food source using nothing but a carefully choreographed dance.
Camouflage and Mimicry
An octopus can rearrange its entire skin pattern to disappear against coral in under a second — no other animal on Earth changes its look that fast.
Sharks
Sharks are older than trees, and the vast majority are no threat to people.
Symbiosis
Nature is full of odd couples, and some of those partnerships are the reason complex life exists at all.
Hibernation
Some animals handle winter by nearly switching themselves off.
Insects
The single most numerous and diverse group of animals on the entire planet isn't mammals, birds, or fish — it's insects, by an overwhelming margin.
Extinct Species
More than 99% of every species that has ever existed on Earth is already extinct — meaning extinction, not survival, is actually the historical norm.
Wolves
Every dog you have ever met descends from a wolf, but wolves are far more than ancestors.
Marine Life
A planet whose oceans cover most of its surface, contain most of its biodiversity, and remain, even today, mostly unexplored.