On the ocean floor, many animals rely not on speed, but on defense. Echinoderms include sea stars, sea urchins, and sea cucumbers, all sharing unusual body structures and survival strategies. Some are ...

The natural world is full of interesting creatures with unique biological systems. Among the most interesting creatures is the starfish, also referred.

Xenacoelomorpha is an enigmatic phylum, displaying various presumably simple or ancestral bilaterian features. This valuable study characterises the reproductive life history of Hofstenia miamia, a ...