Alessandro de Maddalena is on the world’s leading shark experts. Researcher, expedition leader, and author, he is also an illustrator and a naturalist photographer. Real passionate, he has dedicated almost all his life to this species. One of the fundamental parts of his work consists of giving lectures on the biology of sharks in universities, museums and diving associations, for which he uses his own images. During the writing of his many books, reports or articles, Alessandro likes to take care of the different parts that compose them, including also the illustrations. For them, he favors the use of ink and pen, a technique he particularly likes.