Bathymargarites symplector Warén & Bouchet 1989

Bathymargarites' larval shell is unique among the species at 9°N and is therefore not likely to be confused with any other species. It has a superficial similarity to Melanodrymia aurantiaca, shown at left, but the latter is much smaller (~260µm) and has reticulate sculpture over the entire shell.

The shell consists of two parts, a proximal smooth portion approximately 200µm in diameter and a distal portion with axial striations. The aperture is curved, flares out at the anterior edge and is asymmetrical, extending farther out on the apical side than on the basal side.

Size under dissecting microscope: ~350µm
Size under compound microscope: ~320µm

Bathymargarites symplector is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.