Cistern Point - Salt Island & Cooper Island

Alright, let's talk about the Great Barrier Reef's outer edges, the spots people often overlook when they're rushing to the big name sites. We're focusing on some of the less-charted patches directly off Cairns, places where the max depth is a gentle 14m. These aren't the dramatic wall dives, but rather intricate patch reefs, and we love them for their quiet charm. Drop down and you're immediately amongst some seriously impressive coral plates. Not just your average table coral, but enormous structures that look like they've been there for centuries, providing perfect ambush spots. We’ve seen hefty Banded-tail Coral-cod tucked right in, waiting for an unsuspecting meal to swim by. The visibility generally holds around 14m, giving you a clear view of the details, and honestly, that's where the magic is here. Look closely; you’ll spot Eyebrow Gobies darting between crevices and maybe a Slender grouper cruising the edges of the coral. These sites are ideal if you’re into slow, deliberate diving, really taking your time to appreciate the smaller ecosystems rather than chasing pelagics.

Location: Salt Island & Cooper Island, British Virgin Islands, Caribbean
Coordinates: 18.379700, -64.517000
Type: reef

Marine Protected Area: Cooper Island

Best Time to Dive in Salt Island & Cooper Island

The warmest water temperatures in Salt Island & Cooper Island occur in January, averaging 27.1°C. The coolest conditions are in December at 27.1°C.

Monthly Water Temperatures

January: 27.1°C (air: 25.5°C)
February: 27.1°C (air: 25.1°C)
March: 27.1°C (air: 25.2°C)
April: 27.1°C (air: 25.7°C)
May: 27.1°C (air: 26.8°C)
June: 27.1°C (air: 27.6°C)
July: 27.1°C (air: 27.8°C)
August: 27.1°C (air: 28.1°C)
September: 27.1°C (air: 28.3°C)
October: 27.1°C (air: 28.0°C)
November: 27.1°C (air: 27.1°C)
December: 27.1°C (air: 26.3°C)

Nearby Dive Sites in Salt Island & Cooper Island

Nearest Dive Centres to Cistern Point

Marine Life in Salt Island & Cooper Island

Home to 504 recorded species including 410 reef fish, 39 hard corals, 13 sharks & rays, 9 other, 7 whales & dolphins, 6 seagrass & algae.

Notable Species

Mustard hill coral (Porites astreoides) - Hard Corals
Massive Starlet Coral (Siderastrea siderea) - Hard Corals
Gutong (Sparisoma aurofrenatum) - Reef Fish
Great star coral (Montastraea cavernosa) - Hard Corals
Parrotfish (Thalassoma bifasciatum) - Reef Fish
Finger Coral (Porites porites) - Hard Corals
Blue Doctor (Acanthurus coeruleus) - Reef Fish
Yellowhead Wrasse (Halichoeres garnoti) - Reef Fish
Lettuce Coral (Agaricia agaricites) - Hard Corals
Barber (Acanthurus bahianus) - Reef Fish
Dark Green Parrotfish (Sparisoma viride) - Reef Fish
Bicolor Damselfish (Stegastes partitus) - Reef Fish
Gutong (Scarus iseri) - Reef Fish
Sammy Johnson (Scarus taeniopterus) - Reef Fish
French grunt (Haemulon flavolineatum) - Reef Fish
Longspine Squirrelfish (Holocentrus rufus) - Reef Fish
Butterfly (Chaetodon capistratus) - Reef Fish
Sharpnose Pufferfish (Canthigaster rostrata) - Reef Fish
Blushing Star Coral (Stephanocoenia intersepta) - Hard Corals
Barred Hamlet (Hypoplectrus puella) - Reef Fish

Recommended Packing List for Cistern Point

Based on average water temperature of 27.1°C.

Shorty or Rashguard - warm 27°C water needs minimal exposure protection
Mask - essential for every dive
Fins
BCD - buoyancy compensator
Regulator - your most safety-critical piece of gear
Dive Computer - tracks depth, time, and NDL
Surface Marker Buoy (SMB) - essential for boat pickups
Dive Torch - useful for crevices and colour at depth
Underwater Camera - capture your diving memories