Mexican sewer diver Julio Cu Camara has what many would regard as the worst job in the world.
Tasked with keeping one of the world's largest sewer systems flowing, the 52-year-old takes the plunge several times a month to manually remove blockages.
He has found dead humans, horses, weapons and car parts over the 30 years he has been doing the job.
He uses a diving suit and helmet that weigh more than 40 kg to protect him from the city's detritus.
Fresh air is pumped into his suit from the surface and he also has a small microphone in his helmet for communicating with his team.