How do marine traffic look like- more than 640,000 vessels sailing in the world

This is a quick overview of the world's maritime navigation, where more than 640,000 ships sail in seas, oceans and rivers.
I could not imagine the sight and the number of ships in front of me on the map.
you can hardly imagine that all things, products and goods are all delivered through ships.

Key map

1 Red for tankers(oil,gas and chemical).
2-Blue for passenger.
3-Orange for fishing.
4-Green for cargo(general, bulk and and container).
5-pink or purple for private pleasure vessels.

Thanks for your time and your upvote