Canalispira kerni is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae.

[2] Canalispira kerni has a strong, smooth, ivory-colored shell.

The shell's surface has yellowish flammules on it.

Its protoconch is dome shaped and white.

The shell's aperture is 3.26 millimetres (0.128 in) long.