Ana Pgo 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 Minhs 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.

"Originally published in Portuguese in 2018 by Plasticus maritimus, uma espâecie invasora"--Title page verso.