It is said that life on Earth started in a deep ocean hydrothermal vent over three billion years ago. Human beings came later, as a result of massive evolutionary changes to these microscopic oceanic beings. However, we have failed to explore underwater life owing to our interests in terrestrial life.
The blue waters of the sea may look enormous and unchanging, but life has always been undergoing rapid changes in its depths. From the obscure alien-like creatures that prowled the ocean millions of years ago to the more familiar whales and octopi, the ocean hosts diverse ecosystems.