Pod of hippopotamus submerged in river with bank in background

hippos hippopotamidae hippopotamus amphibius african wildlife hippopotamus most dangerous animal in africa african animals hippo wildlife wild animals africa river safari animals ungulate conservation herbivorous safari mammal animal vertebrate artiodactyl mammalia wild animal tourism fauna herbivore river bank wilderness family zoology nature african wild semiaquatic together submerged river pod travel head beautiful dangerous vulnerable status no people ears nobody outdoor eyes