Hippos in the water at sunset, Okavango Botswana

action actions adult adults afrasia africa afro eurasia artiodactyla atmosphere (ambiance) atmospheres (ambiance) backlighting backlightings backlit bath bathe bathed bathing bathings baths biodiversities biodiversity biodiversity management biodiversity managements biological diversity biological diversity managements body of water botswana botswana national parks botswana protected area botswana protected areas cites appendix 2 continent continental area convention on international trade in endangered species of wild count counting day fall description descriptions dusk ecosystem ecosystems enumeration enumerations environment environment management environment protection environment protections environmental managements environments eurafrasia evening even toed ungulate freshwater freshwater wetland area freshwater wetland areas freshwater wetland zone freshwater wetland zones freshwaters group groups have a bath having a bath hippopotamus (hippopotamidae sp) hippopotamus (hippopotamus amphibius) hippopotamuses (hippopotamus amphibius) image and subject individual individuals intergalactic medium intergalactic space interior delta interplanetary medium interplanetary space interstellar medium intracluster medium iucn iucn red list of threatened species iucn status landmass landmasses late afternoon light effect light effects lighting effect lighting effects localisation localization location mammal march (month) matter (substance) matters (substance) mirror image month of year months of year national park national parks natural area natural areas nature nature management nightfall okavango (river) okavango delta (national park) old world outer space reflected reflecting reflection reflections river rivers sensitive natural areas silhouette silhouettes soaking southern africa space species stage of development sun sunset sunsets surrounding surroundings texture textures time scale time scales twilight uicn ungulate universe vulnerable (iucn) vu vulnerable species washington agreement water (matter) water surface water surfaces waters (matter) watersurface watersurfaces wild animal wild animals wild fauna wild faunae world river world rivers world's largest rivers