What invertebrates have no limbs?

Invertebrates are a group of animals that differ from others in the absence of a spine and bone skeleton. The main representatives are:

– coelenterates – a group of multicellular animals without limbs. Here, two species are combined (comb jellies and codders);

– flatworms – protostomes, which can be found in fresh and salt water bodies;

– roundworms – parasitic worms that reproduce only sexually;

– molluscs, etc.