The warm waters of the Gulf of Guinea, which lap across the coastline of seven West African nations, are the most dangerous in the world. It used to be Somalia, but now this area is the epicentre of modern sea piracy. Of all the seafarers held for ransom globally last year, some 90% were taken here. Sixty-four people were seized from six ships in just the last three months of 2019, according to the International Maritime Bureau, which tracks such incidents. Many more attacks may have gone unreported.

The bountiful oil found here could have made the people of the delta rich, but for most it has been a curse. Spills have poisoned the water and the land, and a fight over the spoils of the industry has fuelled violent crime and conflict for decades. In the villages above the pipelines that have netted billions for the Nigerian government and international oil companies, life expectancy is about 45 years.

Militant groups with comic book names like the Niger Delta Avengers have blown up pipelines and crippled production to demand the redistribution of wealth and resources. Oil thieves siphon off thick black crude and process it in makeshift refineries hidden in the forest. The level of violence in the delta ebbs and flows – but the threat is always there.

Their business model is dependent on the compliance of ship bosses who, usually covered by insurance, will pay significant amounts to free their crew after weeks of negotiations.

Seafarers are on the front line of global trade – Nigerian oil ends up at petrol stations across Western Europe, including the UK, as well as India and other parts of Asia. Stories, of which there are many, also reflect the human cost of security failings in the Gulf of Guinea. Unlike Somalia, Nigeria – the largest economy in Africa – will not allow international navies to patrol its waters.

2020 BBC