[1] PL is a measure from the tip of the animals’ snout to the outer margin of the pelvic fins.

[1] Contrasting the males, the female smooth skates grow to a larger size around 112 cm PL.

[1] D. innominatus is found at shorelines to depths of roughly 1200 m below sea level, although it is rare to find them exceeding depths of 800 m.[1] This species inhabits soft seafloor areas on the continental shelf and its upper slope: they are most numerous on the mid-outer continental shelf.

[5] The diet of mature D. innominatus is largely made up of shrimp, prawns, and fish coming from 17 different families.

New Zealand smooth skate is often caught as bycatch in the commercial fishing industry targeting hoki.