<http://schema.org/url>
<http://img-1.newatlas.com/tubercleblades.jpg?auto=format%2Ccompress&amp;ch=Width%2CDPR&amp;crop=entropy&amp;fit=crop&amp;h=347&amp;q=60&amp;w=616&amp;s=93b6697fd5bc2060e4aef1ae6c81577a>
<http://newatlas.com/whale-inspired-bumps-improve-efficiency-of-ocean-turbine-blades/17094/>