This species is found in the tropical waters of the central Indo-Pacific region and is known to range from Malaysia, Indonesia, Philippines to Fiji and the northern coast of Australia.

[2] Chromodoris lochi is blue or blueish-white with a white margin and typically dark or black lines running down the mantle and the foot.

On the mantle, a continuous line runs around the border passing on the outside of the rhinophore and a second median one can be discontinuous.

[3] There is some variation between individuals in this species, and the gills (retractile) and rhinophores (contractile) range in colour from a translucent straw-color, through to pink and light orange.

Its most distinguishing feature is the uniform colouring of the mantle and the lack of white specks which are present in some of the other species.