Hippos don't come from the whale branch, but they share a branch with whales. From wikipedia: > It is unknown whether the last common ancestor of whales and hi

Hippos don't come from the whale branch, but they share a branch with whales. From wikipedia: > It is unknown whether the last common ancestor of whales and hippos led an aquatic, semiaquatic/amphibious, or terrestrial lifestyle However, whales are a great example of a clade that went land -> water in their evolutionary history.