Sunday, June 23, 2013

Oceans: Blue heart of the planet

Almost three quarters of the earth’s surface is covered in water and around 90% of all the living space on Earth is contained in the oceans.

These vast reserves cradled early life and continue to be home to a wealth of extraordinary creatures. At least 230,000 unique species have been documented, although as humans have only explored a small fraction of the depths, there may be as many as two million.

As well as being home to everything from whelks to whale sharks, the oceans offer a range of critical services, including acting as a source of food and regulating the atmosphere.

See full Article and video: