As a colossal Chinese container ship manoeuvered into the narrow Miraflores locks on the Panama Canal, around 27 million gallons of water rose around it, propelling the vessel along this vital maritime shortcut between the Pacific and Atlantic Oceans.
But the critical water cushion that lifts and lowers ships through a series of locks along the canal is deflating because of repeated droughts, disrupting a key global trade route and slashing revenues that underpin Panama's economy.