There are approximately 8.7 million species on Earth — only about 1.2 million have been discovered and named.

Some trees can communicate with each other using underground fungal networks.

Certain fish form schools to reduce predation risk.

Lightning strikes the Earth about 100 times per second.

Some fish can survive completely frozen.

There are caves so large they contain their own rivers and ecosystems.

Tardigrades can survive extreme radiation, freezing, and even space.

Sharks have existed longer than trees.

Water is the only common substance on Earth that naturally exists in all three states — solid, liquid, and gas — at everyday temperatures.