These few survivors, she explains, follow the fish in the dry season to deep pools in the bed of the river near Kratie, in Cambodia.

ECONOMIST: The Mekong river

Commander Hadfield believes that the ISS provides the perfect test bed for developing deep space travel capabilities.

BBC: Chris Hadfield says Nasa's job is not to 'titillate'

The US space agency has been running the programme since 2001, using the 20m-deep Aquarius habitat as its test-bed facility.

BBC: UK astronaut Tim Peake makes 'asteroid splashdown'

People from the other tables had gone to bed: in the sudden silence we distinctly heard the deep roar of a serac, like the bones of a giant trying in vain to turn over in his bed of rock.

NEWYORKER: Bear Meat

The very moment that she felt the prick she sank down into the bed that was right there and fell into a deep sleep.

NEWYORKER: Once Upon a Time

Divers, working in the pitch black in deep and torrid water, were able to find the car on the river bed and the bodies of four men were recovered.

BBC: Inquiry into four river deaths