E05 | Earth from above | The sea needs us as we need the sea - Part 1

The oceans cover more than 70% of the Earth's surface. The sea is the largest natural environment on our planet and remains virtually unexploited. In Corsica, from a tower on Capo Rosso and in the Calanques de Piana. In the Galapagos, we have made a portrait of Paul Watson, ecologist and co-founder of Greenpeace. This Canadian with the physique of an adventurer has taken up the defence of marine animals. In Corsica, in the Bouches de Bonifacio, the Mediterranean basin is one of the richest in biodiversity on the planet. In Corsica, with overfishing. Worldwide, 75% of fish stocks are threatened by overfishing. The cause? Large-scale, wasteful and insufficiently regulated fishing. In Guinea-Bissau, the Bijagos, a string of a hundred or so islands, fish abound in these waters, but for how much longer? In Corsica, on the Sanguinaires Islands, almost 50% of the fish we eat comes from farming. In Norway, the sea is very fragile. There is a balance that has been established over millions of years. A balance that must be preserved.