Adult animal Animal theme Backs Bank shore Bonding Color image Cooling Dangerous Day Famous place Fat Float Full frame Gathering H. a. amphibius Heads Herbivore Herd Hippo Hippopotamus Hippopotamus amphibius Lake Large Large group of animals Lounging Lumpy Lurking Muddy National park Nature Nile hippopotamus No people Non urban scene Outdoors Photography Pod Rocky Round Safari animals Safari park Sandy Serengeti Serengeti national park Side by side Side view Sleeping Submerged Tanzania Togetherness Travel destination Vulnerable species Water Waterhole Watering hole Wetlands Wildlife Wildlife refuge World heritage site