( CNN ) -- A flat-faced frogfish , bug-eating slug and carnivorous sea sponge are some of the top new species named by scientists . They appear on a `` top 10 '' list of new species released Saturday amid warnings from the United Nations that the world is not doing enough to protect vulnerable eco-systems . `` Biodiversity loss is moving ecological systems ever closer to tipping point beyond which they will no longer be able to fulfill their vital functions , '' said Secretary-General Ban Ki-moon on the International Day for Biological Diversity , which is being marked in 11 countries . More coverage : Environment . A report released in late April by researchers from the United Nations Environment Program showed that world leaders had failed on a 2002 commitment to reduce the global rate of biodiversity loss by 2010 . It found that since 1970 animal populations had dropped 30 percent , the area covered by mangroves and sea grasses was down 20 percent and the coverage of living corals had fallen 40 percent . `` The deadline has arrived , yet the deterioration of our natural resources continues apace , '' the secretary-general said in a statement . He warned that communities everywhere would `` reap the negative consequences , '' but that the `` poorest people and most vulnerable communities will suffer most . '' A number of events were held around the world Saturday to mark the International Day of Biodiversity . A garden was created along Paris ' Champs-Elysees , children in Brazil were encouraged to dress up as animals , and the European Environment Agency unveiled a `` living wall '' at its headquarters in Copenhagen , Denmark . The release of a top 10 list species for 2009 continues an annual tradition that marks the anniversary of the birth of Carolus Linnaeus , who initiated the modern system of classifying plants and animals . The new list , issued by the International Institute for Species Exploration at Arizona State University , was chosen from 18,225 species new to science in 2008 , the most recent year for which data has been compiled . They come from Africa , Indonesia , Madagascar , Myanmar , New Zealand , the Philippines , Thailand , the U.S. and Uruguay . The new discoveries include a golden orb spider able to spin webs of more than a meter in diameter . It is the first of its species named since 1879 . A minnow with fangs found in Myanmar is the first example of oral teeth-like structure found in the largest family of freshwater fishes . And , the sea slug that eats bugs was an unusual find in Pak Phanang Bay in the Gulf of Thailand as nearly all sacoglossans , or sea slugs , eat algae . `` Most people do not realize just how incomplete our knowledge of Earth 's species is or the steady rate at which taxonomists are exploring that diversity , '' said Quentin Wheeler , director of the International Institute of Species Exploration .
Top 10 new species list includes frogfish , golden orb spider , bug-eating slugs . Coincides with International Day of Biodiversity being marked in 11 countries . Comment: UNEP report found animal populations have dropped 30 percent since 1970 .