Eric Walker added Sponges can survive massive doses of radiation without getting cancer | New Scientist and Giant barrel sponge - Wikipedia to Giant barrel sponge, and added Giant barrel sponge to Xestospongia

Eric Walker added Giant barrel sponge to Xestospongia, and added Xestospongia to Petrosiidae

Eric Walker added Xestospongia to Petrosiidae, and added Petrosiidae to Haplosclerida