Cable Bommie

Best months: Jul–Nov

Why dive here

With 231+ marine species recorded in the area - including barracuda, blacktip reef sharks, blue sharks, grey reef sharks and manta rays - Cable Bommie offers some of Cocos (Keeling) Islands's richest reef diving. Water ranges 27-29°C, warmest January, February, March.

Best timeJul–Nov

WetsuitA 3mm shorty or thin full wetsuit

Marine lifeBarracuda, Blacktip Reef Sharks, Blue Sharks, Grey Reef Sharks and Manta Rays · 231+ species recorded

Water27-29°C · warmest January, February, March

CharacterReef dive

StandoutExceptional marine biodiversity

Cable Bommie is one of our favourites in the Cocos, and it’s not just for the rusty bits. Yes, there are actual cables running from Direction Island, plus a couple of hefty winches that look like they’ve been slowly melting into the seafloor for a century. It's a surreal backdrop, like an underwater museum exhibit nobody curated. But the real magic happens around the bommie itself, a dense coral pinnacle pushing up from the sand. We love drifting along here, keeping an eye out for the Black-lined Blennies darting into their coral homes. Look closely, and you might spot a well-camouflaged Common Lionfish tucked under a ledge, fanning its venomous fins. The visibility here is often spectacular, sometimes pushing 30 metres, giving you a clear view of cruising Gray Reef Sharks patrolling the nearby ridge, especially when the current picks up. We’ve had some cracking encounters with mantas gliding through, too, though they tend to make their own schedule. It’s a gentle dive, generally, but that ridge current can be lively, so it suits divers who are comfortable with a bit of movement.