Hippo (Hippopotamus amphíbius) in water with wide open mouth. Serengeti National Park. Tanzania.

hippopotamus amphibius hippopotamus hippopotamus amphibius natural area river stream adult group mouth open portrait profile shot yawn bathe serengeti national park hippopotamus bank rive vulnerable iucn national park unesco's world heritage march month water surface nobody hippopotamuses hippopotamus amphibius nature natural areas ecosystem ecosystems rivers stream adults groups mouths opened openings opening portraits profile sights profile sight profile shots profile view profile views side view yawns yawning yawnings baths bathing have a bath having a bath bath soaking bathed bathings water edge banks rive water edges vulnerable species national parks sensitive natural areas world heritage site water surfaces watersurface watersurfaces with nobody hippopotamus hippopotamidae sp even toed ungulate ungulate mammal wild animal animal naturalness area body of water freshwater wetland area stage of development individual enumeration morphology zoology morphology organism shot motion tanzania east africa africa hippopotamidae artiodactyla mammalia therapsida synapsida vertebrata chordata deuterostomia coelomata bilateria metazoa opisthokonta eukaryota threatened endangered species iucn red list of threatened species species environment protection environment management biodiversity management environment convention on international trade in endangered species of wild cites water matter matter substance