Documentary series celebrating our planet. Altogether, they constitute a mere 8% of the world's oceans, but they contain the vast majority of its marine life. Shallow Seas The newly discovered coral reefs in tropical Indonesia reveal that they are one of the richest in the world. It also takes a look at the teams of other aquatic life that live in these calm waters where sunlight reaches the seabed, including beautiful coral reefs. David Attenborough - Narrator: Our planet's continents are fringed by shallow seas. Lower-lying parts of the continents are flooded and the oceans have spread southwards from the Arctic and eastwards from the Atlantic. They are home to fantasy-like creatures such as the head-butting pygmy seahorse, the flashing 'electric' clam and bands of 30- strong sea snakes which have never been filmed before as they the hunt in packs, using cunning strategy. Planet Earth Show Summary Planet Earth is a 2006 television series produced by the BBC Natural History Unit. Summaries. Rarely more than 200 meters deep, they lie on the continental shelves, which may stretch sometimes for hundreds of miles before the sea floor drops into deeper, darker waters. Shallow seas cover only 8% of earth's surface, but contain the richest, most varied maritime life: from plankton and coral (literally vital for the very existence of reefs) to birds and from various invertebrates to mammals like seals, dolphins and whales and from sea snakes to countless fish species. David Attenborough narrates the journey of a humpback whale and calf as they cross the richest seas that fringe our coasts. The Shallow Seas is a vast, warm, shallow seaway in 100 million AD.. 100 million AD, a warm global climate has caused the polar icecaps to melt sea levels to rise by around 330 feet (100 meters). Five years in the making, it was the most expensive nature documentary series ever commissioned by the BBC and was described by its makers as 'the definitive look at the diversity of our planet'. Summary: This episode follows certain creatures such as humpback whales in their journey for food in the shallow seas of the planet.