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Category: Invertebrates



These microscopic and near-microscopic pseudocoelomates are common in freshwater environments all over the world (and a few species can be found in salt-water as well). Rotifers have bilateral symmetry and are divided into head, trunk, and foot regions. Their most distinctive feature is the ciliated “corona” on their head. These coronal cilia form a current that sweeps food particles into their mouth. These cilia can also be used to pull the rotifers through the water when not attached to a substrate. One class of rotifer, the Bdelloidea, are assumed to have not sexually reproduced for millions of years – there are actually no males within the species and the females reproduce only through parthenogenesis!



Data & Facts

Scientific Classification
Kingdom - Animalia
Phylum - Rotifera

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Interesting Animal Facts

It’s an ant’s world. We’re just living in it.

Do humans truly dominate the world? The Argentine ant may have something to say about that. Many ants are known for their large colonies, but the Argentine ant, named for its South American origins takes this to a whole other level. Due to inadvertent introduction by humans, the Argentine ant has spread to all continents except Antarctica. There are now three known super-colonies of these ants: one in Europe (the largest, covering 3,700 miles), one in California (560 miles), and another on the west coast of Japan. Ants are often territorial, but amazingly, ants belonging to the super-colonies recognize one another: if you were to introduce a super colony ant from Japan to one from Europe or California, they will recognize each other as friends!

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