The ancestors of gars, horseshoe crabs and coelacanths looked almost the same as their modern relatives. Darwin called species like these “living fossils'' because they seem like they are evolutionarily frozen in time. But Darwin was wrong.

The story of how the starfish got its arms reminds us that even animals that might be familiar to us today can have incredibly deep histories - ones that stretch back almost half a billion years.

Is there a chance that more species may actually be closer to fish than we originally thought?

We may think of a lot of critters with crab-like body plans as crabs, but, technically, many of them are other types of crustaceans. So why do they share so many physical traits?

Over the years, scientists have found evidence for a lot of weird prehistoric animals, but some of the strangest have been the crocodyliformes!

Cha
pters
MOURASUCHUS: THE W
HALE CRO
CS
1:26
...

Jessi picks a few animals to share and does an impromptu talk about their personalities and how they communicate. <br/>
--

Brit looks back on our eighth month on Nature League, when we explored the theme of communication. Get your Critically Endangered Sharks poster here! Only on sale through May 30th.

Brit looks back on our second month on Nature League, when we explored the theme of biodiversity.

Brit looks back on our third month on Nature League, when we explored the theme of invertebrates.

In this episode of "From A to B", Adrian asks Brit if understanding shark communication could make sharks less scary.

In this episode of "From A to B", Adrian asks Brit about the relationships between intelligence, evolution, biodiversity, and tool use.