What are Invertebrates?
Invertebrates are animals that do not have a
backbone or vertebral column. They make up about
97% of all animal species on Earth — from
microscopic protozoans to giant squids.
- No backbone or internal bone skeleton
- Many have exoskeletons (hard outer covering)
- Most diverse group of animals on Earth
- Range from simple to complex body structures
- Found in almost every habitat on Earth
- Include over 1.3 million known species