Panulirus homarus is a species of spiny lobster that lives along the coasts of the Indian and Pacific Oceans. It lives in shallow water, and feeds on the brown mussel Perna perna. It typically grows to a length of 20–25 cm (7.9–9.8 in). Alongside the dark green nominate subspecies, two red subspecies are recognised, one around the Arabian Peninsula, and one around southern Africa. It is the subject of small-scale fishery.

Distribution Panulirus homarus is found in the Indo-West Pacific region, from East Africa along the coast of the Indian Ocean, as far as the Malay Archipelago, and then along the coasts of the Pacific Ocean to Japan in the north and Australia, New Caledonia and probably the Marquesas Islands in the south. Panulirus homarus lives in shallow water, usually 1–5 metres (3 ft 3 in – 16 ft 5 in) deep, including among rocks in the surf zone, but occasionally up to 90 m (300 ft), and in turbid water.

Description The body of P. homarus can reach up to 31 centimetres (12 in) in total length, or a carapace length of 12 cm (4.7 in), but the average is around 20–25 cm (8–10 in). There is variation in the colouration, which parallels other morphological differences; most animals are dark green and have only very small squamae in the grooves of the abdominal tergites. Other animals are red, and have much more prominent sculpturation in the grooves on the abdominal tergites.