Viano do Castelo in Northern Portugal is a beautiful port city with an attractive historical centre and inviting beaches. But like all coastal places it struggles with the growing amounts of garbage, plastic and otherwise, which spoil the environment on land and in the sea.

Mundus maris friend Prof. Sarah K. Meltzoff - see the review of her book on maritime anthropology - shared pictures of a remarkable public exhibition to alert citizens to the threats of garbage and marine pollution and promote greater respect for the ocean.