Mouthparts Mandibles, maxillae and maxillipeds Specialised feeding appendages that help grasp, process, and move food toward the mouth Walking legs Pereopods Seven pairs of jointed legs used for locomotion, climbing, and gripping surfaces Respiratory plates Pleopod Modified abdominal appendages involved in gas exchange and moisture regulation Circulation Haemolymph system Open circulatory system transporting nutrients and waste Internal "stomach area" Hepatopancreas Digestive organ responsible for enzyme production, nutrient absorption, and storage Tail appendages Uropod Posterior appendages that contribute to sensing, protection, and the outline of the tail end Side flaps Epimeral Extended side plates that help protect the underside and reduce water loss Tail plate Pleotelson Final body segment at the rear of the isopod

Mouthparts Mandibles, maxillae and maxillipeds Specialised feeding appendages that help grasp, process, and move food toward the mouth Walking legs Pereopods Seven pairs of jointed legs used for locomotion, climbing, and gripping surfaces Respiratory plates Pleopod Modified abdominal appendages involved in gas exchange and moisture regulation Circulation Haemolymph system Open circulatory system transporting nutrients and waste Internal "stomach area" Hepatopancreas Digestive organ responsible for enzyme production, nutrient absorption, and storage Tail appendages Uropod Posterior appendages that contribute to sensing, protection, and the outline of the tail end Side flaps Epimeral Extended side plates that help protect the underside and reduce water loss Tail plate Pleotelson Final body segment at the rear of the isopod

Mouthparts Mandibles, maxillae and maxillipeds Specialised feeding appendages that help grasp, process, and move food toward the mouth Walking legs Pereopods Seven pairs of jointed legs used for locomotion, climbing, and gripping surfaces Respiratory plates Pleopod Modified abdominal appendages involved in gas exchange and moisture regulation Circulation Haemolymph system Open circulatory system transporting nutrients and waste Internal "stomach area" Hepatopancreas Digestive organ responsible for enzyme production, nutrient absorption, and storage Tail appendages Uropod Posterior appendages that contribute to sensing, protection, and the outline of the tail end Side flaps Epimeral Extended side plates that help protect the underside and reduce water loss Tail plate Pleotelson Final body segment at the rear of the isopod

Mouthparts Mandibles, maxillae and maxillipeds Specialised feeding appendages that help grasp, process, and move food toward the mouth Walking legs Pereopods Seven pairs of jointed legs used for locomotion, climbing, and gripping surfaces Respiratory plates Pleopod Modified abdominal appendages involved in gas exchange and moisture regulation Circulation Haemolymph system Open circulatory system transporting nutrients and waste Internal "stomach area" Hepatopancreas Digestive organ responsible for enzyme production, nutrient absorption, and storage Tail appendages Uropod Posterior appendages that contribute to sensing, protection, and the outline of the tail end Side flaps Epimeral Extended side plates that help protect the underside and reduce water loss Tail plate Pleotelson Final body segment at the rear of the isopod