Secrets of Sharks’ Skin: 05 Data and Denticles

In this culminating lesson of The Secrets of Sharks’ Skin unit, students analyze and interpret class-generated data from Sharklet-inspired surface models to determine how surface structure affects bacterial attachment. Using tables and graphs, students compare results across different pattern sizes and shapes and conclude that spacing and surface area matter more than shape in preventing adhesion. The lesson connects these findings to the biological function of shark denticles, helping students explain how external structures support survival and evolutionary success. Through discussion and data analysis, students also compare structure-based solutions to chemical methods of controlling bacteria, reinforcing key ideas in biomimicry, sustainable design, and green chemistry.