The nonprofit’s plastic menagerie — all animals whose health is endangered by the trash they are made of — is in its 10th year. It has gone on display across the country, from the United Nations Plaza in New York and the Smithsonian National Museum of Natural History in Washington to the Tulsa Zoo. Disney and SeaWorld have also commissioned sculptures.

Currently, the “ocean ambassadors” are on view at the Oregon Zoo in Portland, the Oakland Zoo in California, and the Florida Aquarium in Tampa.

Ms. Haseltine Pozzi — who is the founder, executive director, artistic director and lead artist — also travels to train venue staff and docents in curriculum designed in partnership with the National Oceanic and Atmospheric Administration.

NOAA estimates that eight million metric tons of plastic end up in the ocean each year. Marine animals become entangled in it or ingest pieces they mistake for food, such as the whale that recently washed ashore in Scotland with 220 pounds of debris in its belly — the same weight in plastic an American throws away annually.