Cork is an impermeable buoyant material. It is the phellem layer of bark tissue which is harvested for commercial use primarily from Quercus suber, which is native to southwest Europe and northwest Africa. From Wikipedia
Researchers develop a carbon-neutral method using cork to efficiently separate oil from water, enhancing environmental sustainability.
:quality(70):focal(1317x596:1327x606)/cloudfront-eu-central-1.images.arcpublishing.com/irishtimes/EOAKUC5JHDRG7XB3SDQNT7GYBM.jpg)