There are over 9,000 described species of sponge (Porifera) living in the ocean, from the intertidal zone all the way down to the abyss. These animals have long been providing for their underwater ...

For example, calcite and aragonite are polymorphs of calcium carbonate. Porifera ("sponges") - A sponge has a system of holes and canals the animal uses to circulate water through its body. Sponges ...

This story appears in the June 2011 issue of National Geographic magazine. The sea star—often called a starfish, though it's no more a fish than it is a sheepdog—ranks with the most ...

Hill would also become the first president of the International Association for the study of Fossil Cnidaria and Porifera.

Taxonomy is the classification and description of living organisms. It includes the naming and defining of species, and the collation of data about their biology and biogeography. A systematic ...

I lead the strategic development and management of the collection and associated staff within the Life Sciences Department to deliver the objectives of the Museum and Science strategies. I am expected ...