The reef cuttlefish or broadclub cuttlefish (Sepia latimanus) is the second largest cuttlefish species after Sepia apama, growing to 50 cm in mantle length and 10 kg in weight. Like many cephalopods, the broadclub can be seen displaying a range of colors and textures. Commonly they are light brown or yellowish with white mottled markings. Males are sometimes dark brown, particularly during courtship and mating. They mate in shallow water between January and May. Their eggs hatch in 38 to 40 days. During the breeding season, males establish a territory, defending a coral head where females lay eggs after mating. Courtship is highly ritualized and involves striking visual displays. Males often guard females to ward off other males.