Whale evolution isn’t completely understood — but genes reveal part of the story Amber Dance and Knowable Magazine
Inverse,
Around 400 million years ago, the ancestor of all four-limbed creatures took its first steps onto dry land.
Around 400 million years ago, the ancestor of all four-limbed creatures took its first steps onto dry land.
Hace millones de años las ballenas, los delfines, los manatíes y las focas se adaptaron a la vida acuática, pues antes eran…
Millions of years ago, ancient land-dwelling mammals returned to the sea. Their bodies became streamlined for swimming…