The conservation of genome regulatory elements over long periods of evolution is not limited to vertebrates, as previously ...

Sea stars and their relatives eat, breathe and scuttle around the seafloor with tiny tube feet. Now researchers have gotten their first-ever look at similar tentacle-like structures in an extinct ...

The recent Invertebrate Wars reminded me of spectacular, but often ignored, group of gastropods. The parasites! This is a group that I have totally geeked out on in the past. In my previous work I ...

The evolution of the sea star, sea urchin, and other echinoderms’ body shape during the Cambrian and Ordovician periods was faster and more dramatic than their ecological innovation, according to a ...

The impact on levels of carbon dioxide in the Earth's atmosphere by the decaying remains of a group of marine creatures that includes starfish and sea urchin has been significantly underestimated. The ...

Imagine you are drawing a starfish—where would you draw its face? Starfish have eyes at the tip of each of their arms, but the location of their heads has puzzled scientists for decades.

This exercise illustrates the two major features that all members of the Phylum Echinodermata have in common - the water vascular system and pentaradial symmetry. The take home message is that all ...

Echinoderms are one of the most highly derived groups of animals with many species as significant components of several marine communities. They’re classified by three fundamental shared ...

Along the ocean floor lives an unusual multi-armed creature. No, not the octopus, the starfish: an animal from the echinoderm family known for its spines and bumps and, most importantly for some ...

define the term adaptation. describe adaptations of sea stars. explain how adaptations of animals enable them to survive in different environments. Sea stars, sea urchins, sand dollars and sea ...

COCKBAIN 1 has suggested an extension of the suture-line theory 2 of the origin and significance of pentamerism in the phylum Echinodermata, which depends primarily on the fact that all modern ...

The Story of How the Starfish Got its Arms Reminds us that Animals have Deep Histories. The story of how the starfish got its arms reminds us that even animals that might be familiar to us today can ...