In this Very Short Introduction audiobook, marine biologist Philip Mladenov provides an accessible and up-to-date overview of marine biology, offering a tour of marine life and marine processes that ranges from the unimaginably abundant microscopic organisms that drive the oceans' food web to the apex predators that we exploit for food; from polar ocean ecosystems to tropical coral reefs; and from the luxurious kelp beds of the coastal ocean to deep-ocean hydrothermal vents where life exists without the energy of the sun. 

The Science of the Ocean offers up riches from every corner of the ocean, from coral reefs and mangrove swamps to icy fjords and deep-ocean trenches, and from great whales to the microscopic beauty of plankton. Along the way, it explains how the ocean itself works, including tides, currents, hurricanes, tsunamis and the global processes of oceanography and climate. An informative and utterly beautiful introduction to the ocean, this audiobook brings the wealth of the sea to your ears.

I am 93. I've had an extraordinary life. It's only now that I appreciate how extraordinary. As a young man, I felt I was out there in the wild, experiencing the untouched natural world - but it was an illusion. The tragedy of our time has been happening all around us, barely noticeable from day to day - the loss of our planet's wild places, its biodiversity. I have been witness to this decline.

How deep do sharks swim? Have more people been into space than the deep ocean? And what effect are we having on the health of our seas? In Ask an Ocean Explorer, marine biologist of over 20 years and advisor for the BBC's Blue Planet II, Dr Jon Copley, explains the science and wonder of the deep ocean. 

Forced to accept that intensive farming on the heavy clay of their land at Knepp was economically unsustainable, Isabella Tree and her husband, Charlie Burrell, made a spectacular leap of faith: they decided to step back and let nature take over. Thanks to the introduction of free-roaming cattle, ponies, pigs and deer - proxies of the large animals that once roamed Britain - the 3,500 acre project has seen extraordinary increases in wildlife numbers and diversity in little over a decade.