Many Knotted Horny Sponge

Prince Edward Island (from the northern tip of Miscou Island, N.B. to Cape Breton Island south of Cheticamp, including the Northumberland Strait and Georges Bay to the Canso Strait causeway), western slope of Newfoundland , including the southern part of the Strait of Belle Isle but excluding the upper 50 m in the area southwest of Newfoundland, Laurentian Channel (bathyal zone) to the northeast of Anticosti Island (=Jacques Cartier Strait), and the Laurentian channel (bathyal zone)(= Honguedo)