Shark Intestines Match 100-Year-Old Engineering Design
Shark spiral intestines function exactly like Tesla valves, a fluid control device invented in 1920. This discovery revealed how sharks digest food so efficiently through one-way flow systems. The spiral shape prevents backflow while maximizing nutrient absorption, using the same principles Tesla designed for steam engines. This new study shows these natural designs could improve systems for filtering microplastics from water and enhance other fluid control technologies.