Wooly Bears on the beach

Asked September 30, 2018, 12:46 AM EDT

Every year for the past 30 years in October when I go to the beach in Oregon I find large numbers of wooly bear caterpillars right at the shoreline. To get there they would have to cross dunes and go over a tremendous length of sand to get down to the edge of the ocean on what would appear to be a suicide mission. The behavior makes no sense to me yet I see it year after year. What in the world would inspire caterpillars to make at least a 200-yard trek through dunegrass onto sand to the ocean's edge? I typically see 30 to 40every year when I'm walking along the coast

Multnomah County Oregon entomology

1 Response

I found this article https://www.fws.gov/nwrs/threecolumn.aspx?id=2147585205 I'm not an entomologist but based on the article, I think they are looking for seaweed to eat.