Ana Pêgo is a marine biologist and is involved in environmental education projects that combine science and art to raise people's awareness about the need to conserve the ocean. She created Plasticus Maritimus - an ongoing project and Facebook page, where she gives regular updates on her findings.

Isabel Minhós Martins graduated in Communication Design from Lisbon College of Fine Arts and co-founder of the Portuguese publisher Planeta Tangerina. She the author of numerous books, including When I Was Born.

Bernardo P. Cavalho is an award-winning illustrator and co-founder of the Portuguese publisher, Planeta Tangerina.