Long-distance cargo ships lose a significant amount of energy due to fluid friction, reports the Phys.org
Looking to the drag reduction mechanisms employed by aquatic life can provide inspiration on how to improve efficiency.
Learning from Aquatic Adaptation
Fish and seaweed secrete a layer of mucus to create a slippery surface, reducing their friction as they travel through water.
A potential way to mimic this is by creating lubricant-infused surfaces covered with cavities.
As the cavities are...
https://mfame.guru/what-seaweed-survival-can-teach-us-about-ship-drag/