Offshore chain, trends NE-SW, in Tlevak Strait, between Goat Island and Dall Island, 22 mi SSE of Craig, Alex. Arch.
Named in 1882 by W. H. Dall, U.S. Coast and Geodetic Survey (USC&GS) after Commander H.E. NIchols, U.S.N, who reconnoitered this region in 1881. Nearby are The Sentinels. Nichols called the entire group "Sentinel Islands" in 1881.
Port Caldera, Augustine Bay, Baldy Bay, Big Bay, Bobs Bay, Breezy Bay, Camp Cove, Coco Harbor, Crab Trap Cove, Diver Bay, Dunbar Inlet, Farallon Bay, Fisherman Cove, Foul Bay, Goat Mouth Inlet, Green Inlet, Hole-in-the-Wall, Hook Arm, Island Bay, Kasook Inlet, Manhattan Arm, Manhattan Arm Sea Otter Harbor, Natzuhini Bay, North Bay, Rose Inlet, Sakie Bay, Soda Bay, Soda Bay, Trocadero Bay, View Cove, Waterfall Bay, Welcome Cove, Windy Cove,
Point Saint Sebastian, Point Lomas, Boreas Point, Cape Augustine, Cayman Point, Clear Point, Eolus Point, Francis Point, Halibut Nose, Hassler Point, Horn Point, Kellogg Point, Natalia Point, Perlas Point, Reef Point, Rose Point, Sakie Point, Saltery Point, Solyanka Point, Turn Point, Way Point, Welcome Point, Whisker Point,
Black Rock, Block Island, Bush Islets, Bushy Island, Camp Island, Channel Island, Clam Island, Comma Island, Corlies Islands, Dall Island, Deadman Island, Devil Island, Entrance Island, Fishhook Island, Fort Islet, Gate Island, Goat Island, Grand Island, Guide Island, Horseshoe Island, Lone Tree Island, Meares Island, Middle Island, Middle Island, Midway Island, Mushroom Island, Natalia Island, Nellag Island, Panhandle Island, Passage Island, Profit Island, Reef Island, Reef Islands, Ridge Island, Round Island, Scrag Islands, The Sentinels, Shelikof Island, Signal Island, Snag Island, Spook Island, Square Island, Table Rock, Ulloa Island,