2016 UPDATE : https://www.youtube.com/watch?v=2gFZOD3Y1Gg
It's technically Organism Size Comparison but this video brings you from an Amoeba to a Blue Whale and beyond... All in a single continuous shot with all featured animals visible on screened (within a magnitude of 2 at least).
Which is larger: Tiger VS Lion? Megalodon VS Sperm Whale? Elephant VS Mammoth? Have you heard of the smallest ant? smallest snake, largest jellyfish, longest worm? Wonder how truly large is the Colossal Squid, Japanese Spider Crab or even the world tallest tree? See for yourself in this video.
Do note all non specific animals are taken via average sizes and there may be some size discrepancies. Comment below if so.
Here are the animals in order of appearance:
Giant Huntsman spider,
Japanese Spider Crab,
Great White Shark,
Lion Mane Jellyfish,