The Striped Egg Cowry (Diminovula bimaculata) is a small tropical ovulid cowry that belongs to the family Ovulidae. This species is known to occur in the warm tropical waters of the western Pacific Ocean. This species can be found on coral reefs feeding on soft corals including the pink ‘cauliflower’ Dendronephthya sp. The mantle has well developed papillae that are coloured white and the mantle colour is generally red or pink. The species can be recognised by the 2-3 white bars that extend across the pink shell. It is found on the cauliflower corals in Port Stephens from depth of 8 – 15 metres in areas that have good current. This species is more active at night and is difficult to find during the day as it hides in the corals.
The Striped Egg Cowry (Diminovula bimaculata) grows to a maximum length of approximately 1.2 cm.