Comment from the contributor:

From IUCN --The International Union of the Conservation of Nature purports that many freshwater fish, crabs, dragonflies, molluscs and aquatic plants are at risk of extinction in southern Africa if its rivers and lakes are not soon protected from developers.

“ International Biodiversity Day, celebrated each year on May 22, pays tribute to the global importance of biodiversity, both as an asset for posterity and a vital resource for people and their livelihoods. ”