This kinds of beetles live in African deserts. We know the value of water in deserts where water is extremely rare. However, every morning a slightly wet & cold breeze blows from the ocean, this breeze is called as the ocean fog. Namib beetle knows how to collect water from this fog. To survive they collect microscopic water droplets from the fog by sticking its back out in the air.
But how can do this ? Actually the beetle's back is covered in thousands of microscopic hydrophilic bumps. These hydrophilic bumps attract water droplets from the fog. Firstly water droplets condensed on the bumps and then roll down the back into beetle's mouth. Actually, the surface of the beetle’s back is extremely hydrophobic (repels water). So when the tiny droplets come off the bump it will roll down in the direction of the incline.
Inspired by this beetle, some researchers in Boston University are now developing materials that mimic the way the beetle extracts water from the ocean breeze. The researchers hope to bring their products to industrial scale.
references :
https://asknature.org/strategy/water-vapor-harvesting/
http://todayilearned.co.uk/2013/09/22/desert-beetle-elevates-its-back-to-collect-fog-water-and-channel-it-into-its-mouth/
https://www.chemistryworld.com/news/catching-water-with-imitation-beetle-bumps/8091.article