Spicasaccus

Megaforaminata is a phylum of polizoans characterized by a cyclical body plan and by having multiple digestive zooids. The image shows a Spicasaccus, an mesobenthic predator seven cm in diameter. It is a liquivorous organism that injects digestive enzymes into its prey thanks to its multiple needles, wich are the modified mouthparts of the digestive zooids. All of these needles are connected o an individual gastric cavity. Spicasaccids have a unique organ called saccus. It is a kind of bag that they fill with gravel or sand to gain weight and stay on the substrate.