Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The Caspian Sea is also classed as the world's largest lake.
52
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
8
Studies show that financially stable men prefer smaller breasts.
16