Pacific OceanCanada
50°17′N 125°09′W
Discovery Islands
The Discovery Islands are a group of islands located at the northern end of the Salish Sea and the eastern end of Johnstone Strait, between Vancouver Island and the mainland coast of British Columbia, Canada.

Chart
Overview
The Discovery Islands are a group of islands located at the northern end of the Salish Sea and the eastern end of Johnstone Strait, between Vancouver Island and the mainland coast of British Columbia, Canada. Most of these islands have very few residents. Only Quadra Island and Cortes Island have ferry service. The remainder are served by private boat or float plane.
From Wikipedia, CC BY-SA 4.0
Census, cataloged
- Major islands10
- Minor islands55
- Islets325
- Rocks & skerries228
Major islands
Quadra Island
- Area
- 272 km²
- High point
- 610 m
Quadra Island is a large island off the eastern coast of Vancouver Island, in British Columbia, Canada. It is part of the Discovery Islands, in the Strathcona Regional District.
West Redonda Island
- Area
- 174 km²
- High point
- 1,047 m
West Redonda Island is an island in British Columbia, Canada. It is part of the Discovery Islands, an archipelago between Vancouver Island and the mainland, and between the Strait of Georgia and Johnstone Strait.
Sonora Island
- Area
- 165 km²
- High point
- 893 m
Sonora Island is one of the outer islands (without ferry service) of the Discovery Islands of British Columbia, Canada. It is at the eastern end of the Johnstone Strait and the northern end of the Discovery Passage within Electoral Area C of the Strathcona Regional District.
Cortes Island
- Area
- 127 km²
- High point
- 444 m
Cortes Island is an island in the Discovery Islands archipelago on the coast of British Columbia, Canada. The island is 25 km (16 mi) long, 13 km (8 mi) wide, and 130 km2 (50 sq mi) in area. It has a population of 1,035 permanent residents (2016 census).
West Thurlow Island
- Area
- 81.3 km²
- High point
- 566 m
West Thurlow Island is an island in British Columbia, Canada. It is part of the Discovery Islands, an archipelago between Vancouver Island and the mainland, whose waters connect the Strait of Georgia with the Johnstone Strait and the Queen Charlotte Strait.
Read Island
- Area
- 57.4 km²
- High point
- 435 m
Read Island is an island in British Columbia, Canada. It is part of the Discovery Islands between Vancouver Island and the mainland, between the Strait of Georgia and Johnstone Strait.
East Thurlow Island
- Area
- 106 km²
- High point
- 662 m
East Thurlow Island is an island in British Columbia, Canada.
East Redonda Island
- Area
- 100 km²
- High point
- 1,591 m
East Redonda Island is a coastal island in British Columbia, Canada, part of the Discovery Islands archipelago. It lies just to the north of Desolation Sound Marine Park, which is located off the north end of the Malaspina Peninsula at the mouth of Toba Inlet within Electoral Area C of the Strathcona Regional District.
Hardwicke Island
- Area
- 76.3 km²
- High point
- 804 m
Hardwicke Island is an island in British Columbia, Canada, measuring approximately 78 square kilometres (30 sq mi).
Maurelle Island
- Area
- 57.1 km²
- High point
- 453 m
Maurelle Island is an island in British Columbia, Canada. It is part of the Discovery Islands between Vancouver Island and the mainland, between the Strait of Georgia and Johnstone Strait.
Minor islands
Raza Island
- Area
- 16.8 km²
- High point
- 906 m

Stuart Island
- Area
- 16.8 km²
- High point
- 510 m

Hernando Island
- Area
- 9.9 km²
- High point
- 107 m
Marina Island
- Area
- 8.7 km²
- High point
- 87 m

Savary Island
- Area
- 4.9 km²
- High point
- 79 m
Mink Island
- Area
- 3.2 km²
- High point
- 144 m
Twin Islands
- Area
- 3 km²
- High point
- 146 m
North Rendezvous Island
- Area
- 1.5 km²
- High point
- 174 m
Helmcken Island
- Area
- 1.4 km²
- High point
- 67 m
Gowlland Island
- Area
- 1.2 km²
- High point
- 99 m
South Rendezvous Island
- Area
- 1.1 km²
- High point
- 136 m
Kinghorn Island
- Area
- 0.81 km²
- High point
- 134 m
Penn Islands
- Area
- 0.63 km²
- High point
- 130 m
Hill Island
- Area
- 0.53 km²
- High point
- 145 m
Walkem Islands
- Area
- 0.52 km²
- High point
- 65 m
Martin Islands
- Area
- 0.47 km²
- High point
- 93 m
Dent Island
- Area
- 0.47 km²
- High point
- 80 m
Hardinge Island
- Area
- 0.41 km²
- High point
- 79 m
Mitlenatch Island
- Area
- 0.41 km²
- High point
- 47 m
Eveleigh Island
- Area
- 0.41 km²
- High point
- 94 m
Melville Island
- Area
- 0.41 km²
- High point
- 99 m
Bold Island
- Area
- 0.37 km²
- High point
- 68 m
Subtle Islands
- Area
- 0.36 km²
- High point
- 54 m
Turn Island
- Area
- 0.35 km²
- High point
- 71 m
Allies Island
- Area
- 0.34 km²
- High point
- 80 m
Gillard Islands
- Area
- 0.33 km²
- High point
- 65 m
Sturt Island
- Area
- 0.33 km²
- High point
- 45 m
Yorke Island
- Area
- 0.32 km²
- High point
- 103 m
Unnamed island
- Area
- 0.31 km²
- High point
- 70 m
Middle Rendezvous Island
- Area
- 0.29 km²
- High point
- 66 m
Otter Island
- Area
- 0.27 km²
- High point
- 102 m
Okis Islands
- Area
- 0.24 km²
- High point
- 61 m
Morgan Island
- Area
- 0.23 km²
- High point
- 120 m
Unnamed island
- Area
- 0.22 km²
- High point
- 82 m
Erasmus Island
- Area
- 0.21 km²
- High point
- 50 m
Unnamed island
- Area
- 0.21 km²
- High point
- 60 m
Octopus Islands
- Area
- 0.2 km²
- High point
- 46 m
Unnamed island
- Area
- 0.2 km²
- High point
- 56 m
Unnamed island
- Area
- 0.2 km²
- High point
- 59 m
Goepel Island
- Area
- 0.19 km²
- High point
- 53 m
Coulter Island
- Area
- 0.18 km²
- High point
- 51 m
Elizabeth Island
- Area
- 0.18 km²
- High point
- 59 m
Unnamed island
- Area
- 0.17 km²
- High point
- 44 m
Tan Island
- Area
- 0.16 km²
- High point
- 55 m
Unnamed island
- Area
- 0.15 km²
- High point
- 85 m
Peck Island
- Area
- 0.14 km²
- High point
- 69 m
Block Island
- Area
- 0.13 km²
- High point
- 75 m
Unnamed island
- Area
- 0.13 km²
- High point
- 67 m
Howe Island
- Area
- 0.13 km²
- High point
- 90 m
Protection Island
- Area
- 0.12 km²
- High point
- 38 m
Copplestone Island
- Area
- 0.1 km²
- High point
- 45 m
Grouse Island
- Area
- 0.1 km²
- High point
- 43 m
Cordero Islands
- Area
- 0.1 km²
- High point
- 75 m
Little Dent Island
- Area
- 0.1 km²
- High point
- 50 m
Maud Island
- Area
- —
size unknown
Rocks & skerries
On the chart above, at its closest zooms.
Listing 65 of 618; the rest are on the chart.
Figures
Comparative heights
- East Redonda: 1,591 m
- West Redonda: 1,047 m
- Raza: 906 m
- Sonora: 893 m
- Hardwicke: 804 m
- East Thurlow: 662 m
- Quadra: 610 m
- West Thurlow: 566 m
- Stuart: 510 m
- Maurelle: 453 m
- Cortes: 444 m
- Read: 435 m
- North Rendezvous: 174 m
- Twin Islands: 146 m
To the same scale
Islands by area
Groups within
Overlapping groups
Photographs

Discovery Islands

Barefoot Raid 2019

Sunrise on Cortes Island, B.C. Photo credit: Stephen Hui


Discovery Passage from Campbell River. Quadra Island is at the background.

Pacific oysters grow on trays below rafts seen along the shores of Read Island, British Columbia, Canada.

Sonora Island forest

Three rental cabins are available at Shoal Bay on East Thurlow Island, British Columbia, Canada. Boaters often tie up to the dock here.

Shoal Bay off Cordero Channel, East Thurlow Island, British Columbia, Canada, is picturesque.

Sources
Facts
Photographs
- Discovery Islands 201807. Wpcpey / CC BY 4.0
- Island in Desolation Sound, BC. Dale Simonson / CC BY-SA 2.0
- Cortes Island sunrise. Stephen Hui / CC BY-SA 4.0
- Refuge cove. KenWalker / CC BY-SA 3.0
- Discovery Passage from Campbell River. Ymblanter / CC BY-SA 4.0
- Read Island oyster farms. David Stanley / CC BY 2.0
- Sonora Island forest. Hugo Chisholm / CC BY-SA 2.0
- Shoal Bay cabins on East Thurlow Island. David Stanley / CC BY 2.0
- Shoal Bay off Cordero Channel. David Stanley / CC BY 2.0
- Refuge Cove banner view of wharf. Shaundd / CC BY-SA 4.0
- Abandoned (2493361477). A.Davey / CC BY 2.0
- Cortes Island banner Mansons Landing. Original photo by Gerry Thomasen; cropping done by Shaundd / CC BY 2.0