Sponges that are hundreds of years old live and thrive atop layers of dead animals in the Arctic Ocean. They survive in the low-nutrient water by feeding off extinct creatures' remains, which bacteria help them to digest.
300-year-old Arctic sponges feast on the corpses of their decaying, extinct neighbors : Read more
300-year-old Arctic sponges feast on the corpses of their decaying, extinct neighbors : Read more