15 fascinating things on Earth you had no idea existed

The Earth is wonderfully weird. From tiny puddle-dwelling creatures that can survive in outer space to a paint so dark that your eyes can't actually even see it, the Earth is filled with plenty of strange and incredible things.

Here are a handful of things on this planet that you probably had no idea existed.

Vantablack is the darkest known substance in the universe.

Surrey NanoSystems made the original Vantablack. 

Surrey NanoSystems

Vantablack is a nanomaterial that is darker than any other substance on Earth. It was developed in the UK by Surrey NanoSystems in 2015 and is actually a collection of vertical carbon tubes that are "grown" on a substrate.

Vantablack absorbs 99.98% of the light that hits its surface. This means that the human eye technically sees nothing when it looks at Vantablack, making it the closest thing to staring into a black hole.

The blue angel sea slug looks like an alien.