The Zoological Society of London, IUCN and Wildscreen report that one fifth of the world’s invertebrates are threatened with extinction. Fresh water invertebrates were found to have the highest extinction risk according to a review of 12,000 invertebrates from the IUCN Red List of Threatened Species. Terrestrial and marine invertebrates were close behind according to the study by conservation scientists. The findings show that the threat status to invertebrates is similar to vertebrates and plants. Learn more at: Spineless – Status and Trends of the World’s Invertebrates.