In 1987, Hallie Austen Iglehart was horrified to read an article in the Light about the massive impact human trash has on sea creatures: up to one million seabirds and another 100,000 marine mammals and sea turtles die each year from ingesting plastic, the Monterey Bay Aquarium estimates. In response, she started doing her part to pick up trash at Limantour Beach, the closest waterfront to her old home in Inverness Park. “I started picking…