Black-Spined Murex

Murex ternispina

Murex ternispina is a species of sea snail characterized by its distinct black spines. This marine gastropod can be identified by its unique shell structure, which features prominent spines that differentiate it from other murex species. The shell can reach a maximum length of 12.0 cm, with a common size around 9.0 cm. It primarily inhabits the Western Pacific Ocean, occurring in various tropical environments from Sri Lanka to Melanesia, extending north to Japan and south to southern Indonesia and possibly eastern Queensland. This species is typically found in benthic zones at depths ranging from 0 to 60 meters. It thrives in habitats such as rocky reefs and sandy bottoms, where it can forage for food. The Black-spined Murex is a non-broadcast spawner, meaning it does not release its eggs into the water column; instead, it has a more direct reproductive strategy. The life cycle of this species does not include a trocophore stage, indicating a unique developmental pathway. Divers may encounter the Black-spined Murex while exploring shallow waters, where it can often be seen among the substrate. This species is harmless to humans and is sometimes collected for food and shell trade. Its conservation status is currently not evaluated, and it is not listed under any specific protective measures.