Figs. 2C–D and 4E
Nerita chamaeleon Linnaeus, 1758: 779.
Nerita chamaeleon – Tan & Clements, 2008: 485, figs. 2-5, 2-6.
Nerita (Argonerita) chamaeleon – Eichhorst, 2016a: 458, pl. 114.
Material. UBDM.7.00030. Sample was collected from PP.
Abundance. Very abundant.
Habitat. Rocky shore. Low to high shore. Associated with breakwaters, seawalls and natural rocky shore.
Local distribution. MC, PJ, ES, PP, PT and UB.
Ecology and conservation. Common inhabitant of rocky shores for both natural rocks (ES and PP) and artificial seawalls (MC, PJ, PT and UB), though occurring in much greater numbers on the former (Marshall et al. 2017). Very likely to rapidly re-establish populations after degradation of local habitats. Compared to natural rocky shores, N. chamaeleon is heavily predated on in artificial rocky shores based on shell scars suspected of attacks from common shore crab. N. chamaeleon is of lowest conservation concern in Brunei because of its ability to rapidly colonise and establish large populations, and especially its tolerance to mudinundated rock surfaces.
Biogeographical distribution. In Western Coral Triangle at SB, HI, BY, SR and BK and Sunda Shelf at TR, JH, SW and SG. Generally distributed in Indo-West Pacific (Frey 2010b).