New research shows that the earliest sponges were soft bodied and lacked skeletons, explaining why their oldest fossils are ...

From horseshoe crabs to crocodiles, some of these creatures have looked about the same for hundreds of millions of years.

To understand the origins of multicelled life, researchers are studying a motley assortment of simpler animal relatives. The commonalities they’re unearthing offer a trove of clues about our mutual ...

For over a century, scientists have wrestled with one of biology’s most fundamental mysteries: how the first animals evolved. These earliest creatures emerged more than 600 million years ago in ...

For more than 500 million years, sea creatures have been getting bigger — much bigger as it turns out, according to a study by scientists who say that the evolutionary trend toward larger body size ...

Far beneath the waves, animals evolve in strange and surprising ways, often becoming much larger than their shallow-water relatives. This video explores why deep sea creatures grow to giant sizes, and ...

All the Latest Game Footage and Images from Creature Evolution Simulator Design an ecosystem and watch your creatures evolve through millions of years by means of natural selection. See them fight for ...