Oceans make up over two thirds of the Earth's surface.
The oceans as a biome contain many fascinating ecosystems. The oceans contain the only currently known ecosystem that does not derive its energy from the sun. The hot vent ecosystems of the deep ocean floor offer us a most unusual insight into the possibilities of ecosystems beyond our planet. This course is a forum designed to enhance the student's knowledge about marine ecosystems. We will visit many sites devoted to the oceans.