What Type Of Skeleton Do Invertebrates Have?

What Type Of Skeleton Do Invertebrates Have? There are three types of skeletons: the endoskeleton, the exoskeleton and the hydrostatic skeleton. Most cnidarians, flatworms, nematodes and annelids have a hydrostatic skeleton that consists of fluid held under pressure in a closed body compartment. Which kind of skeleton is present in invertebrates? Exoskeletons are external, and