At more than 2 meters long, Aegirocassis was not only the biggest radiodont ever, but it also may have been the biggest animal in the Early Ordovician. This bizarre marine giant may have only been possible, thanks to a major revolution...

Sea scorpions thrived for 200 million years, coming in a wide variety of shapes and sizes. Over time, they developed a number of adaptations--from crushing claws to flattened tails for swimming. And some of them adapted by getting so big...

Continuing through phylum Arthropoda, we read the clade Crustacea. This includes many familiar animals like crabs and lobsters, as well as many that will be far less familiar. Let's start out by getting a sense of the general form and...

The search for the King Kong Crab in Indonesia turned up some BIG results!

How are the contents of animals organized? How does this differ from animal to animal? Are all animals symmetrical, and in the same ways? Just a bit more information to get through before diving into all the animal phyla, I promise!

BCU High angle, Appendages of colourful toxic sea urchin waving, Malaysia

BCU Low angle, Ghost Crab (Ocypode) on beach, Bermuda

CU Sally Lightfoot Crab (Grapsus) feeding on washed up Jellyfish Carcass, Bermuda

VOICED : Patients abound at Argentine hospital for broken statues

CLEAN : Patients abound at Argentine hospital for broken statues