Boccardia proboscidea has a pan-Pacific distribution including the west coast of North America, Japan, and southeastern Australia. This distribution is attributed in part to the production of early and late larval stages that are widely dispersed by ocean currents. Only 17 pearl oysters were found in 1989. Transects were resurveyed in 1997, and 22 pearl oysters were counted. Most were found on the slopes of patch reefs around the Sampan Channel in 2-6 m depth.
Recruitment is low.
Standing stock estimated from observed densities on transects in 1997 and the extent of available habitat is about 950 individuals. The size distribution of pearl oysters on transects indicates that they are fished, despite legal protection. Two new species of the diplodactylid gecko Bavayia are described from Mt. Koghis, Province Sud, New Caledonia. One species is a large, characteristically colored representative of the B. sauvagii complex. It is sympatric with B. sauvagii itself, for which a neotype is here designated.