English Giant barrel sponge Cited by user Cwmhiraeth on 19 Jul 2013 The giant barrel sponge (Xestospongia muta) is the largest species of sponge found growing on Caribbean coral reefs.
English List of longest-living organisms Cited by user Hike395 on 09 Jun 2013 This is a list of the oldest individual bioforms. This is usually defined as:.