Artist Carole King has delighted judges and marine educators alike with her winning portrayal of the Wynnum mangroves inundated at high tide.
Ms King has been painting Queensland habitats for the last 15 years.
"Having an international prize encourages artists worldwide to look at their country's ecosystems; to gain an understanding of how precious and vulnerable these special areas are," she said.
"The mangrove is in itself a layered and textural community. Whenever I go to the Wynnum Boardwalk, another layer is revealed so for me collage was the way to go."