How many endangered species are there?

There are more than 128,500 species on the IUCN red list and are more than 41,415 are threatened with extinction. This includes 40% of amphibians, 26% of mammals, 34% of conifers, 14% of birds, 33% of sharks and rays, 33% of reef corals and 33% of selected crustaceans. But there are probably lots more threatened species on our planet that have not been identified. This shows animals, plants and fungi species. Scientists estimate that there are about 15 million different species on our planet but only 2 million are currently known.