We do agree that all species are important, but we don’t talk about marine life as much as we do about wild life. One of the biggest reasons behind this ignorance is that marine life remains hidden from us. Most of us never see any marine life beyond live fish in aquarium and dead fish in a fish market. We have usually no clue what happens underwater. But this world is as complex and interesting as our own world. Plus, it literally lives in three dimensions. Marine creatures live throughout the length and breadth of all the oceans on the face of the earth and they live a long way underwater too. We humans have mostly been unaware of what happens in the depths of the oceans until quite recently. However, now, thanks to modern technology, we know quite a lot about marine life. Following is a very interesting link that shows various creatures that live at various depths. Open the link, scroll down and enjoy!