Turtle Rock appears on Diveplanit's list of Cocos dive sites, where it is described as a reef dive with busy parrotfish activity, and the name points to its reputation for turtles. Green and hawksbill turtles are common around Cocos – the lagoon's seagrass beds are an important green turtle feeding area, and hawksbills feed on the sponges and soft corals of the outer reefs – so turtle encounters are a regular part of diving here. Beyond this, public documentation of the site is very limited: the official tourism dive-site listing does not include it, and neither its GPS nor its depth range is published.

What can be said is that, like other Cocos reef sites, it offers healthy hard coral, varied reef fish and good visibility, typically 20–30 m. Parrotfish are the other stars: schools of parrotfish graze the coral, their crunching audible underwater, and the larger species such as humphead parrotfish are seen around the atoll. Divers visiting Cocos for a week or more are likely to be offered a mix of sites, and Turtle Rock is one of the options the operator uses.

Anyone particularly keen on turtles should ask Cocos Dive to include it. The site is presumed to be suitable for Open Water divers, but depth, current and layout should be confirmed on the day. Turtle-watching etiquette applies: stay back, don't block their path to the surface to breathe, and never touch or ride a turtle.

Turtles resting under ledges should be left undisturbed; a turtle that is repeatedly startled uses oxygen it needs for its next dive.

Fly to West Island on the twice-weekly Virgin Australia service from Perth (usually routed via Christmas Island; allow 7–10 days on the islands to absorb weather and flight delays). Cocos Dive collects divers from West Island accommodation in the morning (pickup around 8 am, departure about 9 am) and runs its boats from West Island into the lagoon. Turtle Rock's position is not published; it is visited only as part of a Cocos Dive day trip, with the site chosen on the day according to conditions.

No shore access. The boat typically combines it with another reef and the lunchtime stop at Direction Island.

Cocos has two seasons. The south-east trades blow steadily from roughly April/May to October, often 15–25 knots, which chops up the lagoon and pushes swell onto the eastern and southern outer reefs; divers are then kept to sheltered sites. The doldrum season (November to March/April) brings lighter, variable winds, flatter seas and the widest choice of outer-reef sites, and is the best time to dive, though it is also the tropical cyclone season and squalls pass through.

Because the position of Turtle Rock is not published, its exposure cannot be stated; Cocos Dive schedules it when wind and tide suit.

Follow the guide's briefing. Typically a reef dive: descend on the reef, work slowly around the rock watching for turtles and parrotfish feeding, stay above the no-decompression limit and finish with a safety stop on the reef top.

Cocos Dive (Dieter Gerhard, West Island, operating since 1990) is the only scuba operator on the islands and the only way to dive this site. It runs seasonal two-dive day trips with lunch and a surface interval on Direction Island, maximum 10 divers per trip; sites are chosen on the day according to wind, tide and diver experience. Trips book out well ahead and courses are currently suspended, so arrive certified.