Invertebrates are animals without a backbone – but that’s the only thing they all have in common! Learn more about some of the many different types of invertebrate, from arthropods to sponges.
- An invertebrate is any animal that does not have a backbone.
- More than 95% of all animal species are invertebrates.
- There are over 30 invertebrate phyla, including Arthropoda, Mollusca and Porifera.
- Sponges have no organs, digestive system or circulatory system.
More than 95% of all species in the animal kingdom are invertebrates – animals without a backbone.
There are over 30 invertebrate phyla and they show a huge range of diversity.
Some have hard exoskeletons, while others are soft and rely on water to provide structure and support.
Some are microscopic while others ...
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