Which African animal spends most daylight hours submerged in rivers to avoid sun exposure?

Hippopotamus

Which movie features Leonardo DiCaprio as Jordan Belfort? Which actress stars as Evelyn Abbott in the horror film "A Quiet Place"? Who walked Phoebe down the aisle at her wedding? Which event in 1963 showcased peaceful demonstrations that significantly influenced civil rights legislation? In Undertale, what flower initially greets the player character?