This document provides an introduction to sharks, including their evolution, anatomy, senses, reproduction, perception in different cultures, conservation issues, and presence in Honduras. It discusses how sharks evolved over 400 million years ago, have a cartilage skeleton and various anatomical features. The document also addresses shark reproduction methods, how they are viewed in different cultures, threats like finning and how over 100 million sharks die annually, as well as provides suggestions for how readers can help sharks.