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Invertebrates

Invertebrates are animals without a backbone. This is not one family but a huge collection of very different groups: insects, spiders, snails, worms, octopuses, jellyfish, starfish and many more. Well over nine out of every ten kinds of animal are invertebrates. Many have a hard outer covering instead of bones inside.

How to recognise an invertebrate

Invertebrates on this site

Sorted by scientific order

Within the group, scientists place animals in orders. Animals in one order share a common ancestor.

What they eat

Other groups: mammals, birds, reptiles, amphibians, fish.