When you look at the ocean, it seems like the most peaceful place on earth.
But actually, it is filled with beautiful (And sometimes, dangerous) creatures living inside that we can not see.
The ocean is mysterious, terrifying, humbling, and mesmerizing at the same time.
Its magnificence has inspired countless novels, films and songs, all in constant awe of its power and beauty.
We have gathered some images of all those tiny, as well as giant creatures, living under the sea.