Thanks to Jubayer for submitting his first English writing in our site on dolphins and drones. His writing captured the main concept of our project: echolocation. This was his first time writing in our site and he did pretty well. Keep up the good work! You can see his full writing in this link and here is a screenshot: https://docs.google.com/document/d/1T6U36JR6b-Tl8KKGfEQtiMCJRCE103zB/edit?usp=sharing&ouid=106512088825710967320&rtpof=true&sd=true