Andrej Gajic, a renowned ichthyologist, talks about the drastic consequences pollution has on creatures of the ocean. Andrej Gajić, Head of the Department for the Study of Marine Animals “Shark Tales” at National Geographic, graduated from the Faculty of Science in Sarajevo. He is an expert in shark studies and the founder of Sharklab ADRIA, a non-profit organization whose main focus is the research of sharks and skates in the Mediterranean area. He is the author of more than 70 scientific papers, two books, and several short documentaries.