Adult animal Animal head Animal theme Calm Camouflage Color image Copy space Crater Dangerous Day Distant Ears Environment Extinct volcano Green H. a. amphibius Habitat Herbivore Hippo Hippopotamus Hippopotamus amphibius In a row Lake Landscape Looking around Lurking Lush National park Nature Ngorongoro conservation area Ngorongoro crater Ngorongoro district Nile hippopotamus No people Outdoors Part of Photography Reeds Remote Safari animals Safari park Shore Side view Sneaky Stealth Submerged Sustenance Swimming Tanzania Travel destination Two animals Vulnerable species Waterhole Watering hole Waters edge Wildlife refuge