In most narratives, the story of evolution is the story of organisms emerging from the ocean and eventually populating the land. But for some species, that evolution also involved a return trip.

Kangaroos are adaptable animals. Consequently, they can be found in a variety of environments, including forests and woodlands, grasslands and plains, and even deserts. As long as there is plenty of ...

Animals living about 500 million years ago spent time on mudflats that were periodically exposed to the air. The finding suggests that some of the earliest animals were able to survive outside of ...

The transition from water to land is a question that still intrigues scientists. Those ancient organisms would have needed to adapt to several new challenges to life out of water. So, how did they do ...

It seems like every time researchers stick their heads—or their remotely operated vehicles—underwater, they find a shocking array of animals thriving far beyond humanity’s reach. A study published in ...

For decades, biologists thought that early tetrapods, ancient vertebrates that started conquering the land over 300 million years ago, developed like modern amphibians—beginning their lives as purely ...