ocr: SOFT-BODIED INVERTEBRATES OFT-BODIED invertebrates not protected by a hard outer skeleton. - . (animals without a backbone) The most primitive of the solt-bodied include the sponges, jellyfish, slugs, invertebrates are the sponges. They are and all the different kinds ofworms. made up of cells supported by a simple They have a soft body thatis internal skeleton. Some soft-bodied invertebrates are protected by ashell. For example, snails, Water out clams, and oysters each have contains one or two shells to protect waste them from predators and products from drying out when they are out of water ...