Trivia: Which fact is true about whales?
They lived before dinosaurs
Their ancestors walked on land
They don’t have teeth
They evolved from sharks
The correct answer is Their ancestors walked on land
So why is this answer correct? : While whales now live in the ocean, 50 million years ago, the common ancestor of whales, dolphins, and porpoises walked on land. This goat-like mammal, called Pakicetus, lived on the riverbanks of India and Pakistan. Slowly, the animal’s descendants got used to water and evolved into what we know as whales.