External Territories · Reef

Ski Run

A sand chute from the reef edge down to a glassfish-covered bommie hunted by trevally, with whitetips and extra-long garden eels on the sand.

Cocos (Keeling) IslandsBoat (day trip)
YouDive mascot illustration; not a photograph or site map

Mascot illustration — not a photograph or site map.

Depth
15–40 m
Certification
Deep/Advanced + experience
Access
Boat (day trip)
Dive type
Reef
Region
Cocos (Keeling) Islands

Depth describes the recorded site range, not a recommended dive depth. Certification is a recorded recommendation; suitability depends on your planned route, training, experience and current conditions.

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Location & map

Recorded location

Interactive map provided by Google Maps. If the map does not load, use the larger-map link.

Meet the site

Ski Run takes its name from its layout: from the reef edge at around 15 m a pale sand chute runs down the slope like a ski run, and Diveplanit's Cocos page describes a 'sandshute to drop-off' dive that matches it. The official tourism listing calls it a spectacular site and gives a range of 15–40 m. The dive starts at the edge of the reef, where hard and soft coral give way to sand, and descends to a bommie covered with glassfish – dense, shimmering curtains of small silver fish that part and re-form as divers move through them, and which in turn draw in predators. Trevally hunt the glassfish schools, cutting through them in bursts, and the interplay between predator and prey is the character of the site. On the sand slope itself, whitetip reef sharks rest on the bottom, often in small groups, and the colony of garden eels here includes what the official listing calls 'extra-long' eels, standing tall out of the sand in the current. Because much of the interest is on sand and around a single structure rather than along a coral wall, Ski Run makes a good contrast to its neighbours Cabbage Patch and Rose Wall. Depth is the defining feature: the bommie sits at the kind of depth where no-decompression time shortens quickly, and the slope continues to 40 m and beyond, so this is better suited to divers with Advanced certification or comparable experience. Visibility on the north-western side is usually 20–30 m or better, and on the incoming tide the water can be exceptionally clear, making the descent down the sand chute one of the more atmospheric entries on Cocos. Current varies with the tide through the nearby Western Boat Passage. The dive rewards patience – settling at the bommie and letting the glassfish and trevally show unfolds better than covering ground. For photographers, the glassfish bommie with sunlight from above is the shot, and wide-angle is the lens to bring.

Research this site before booking

Ski Run is recorded as Reef in Cocos (Keeling) Islands. The listed access is boat (day trip). Confirm the actual meeting point, route and permission to visit; a map pin does not establish any of these.

Topics flagged by the stored research

These are questions prompted by the existing notes, not a verified or complete hazard assessment.

Current and timing
Ask how the operator assesses the current window for the actual route. Historical tide notes are not a departure instruction.
Planned depth
Confirm the intended route and training requirements; the recorded maximum is not a target.

Historical access notes exist for this record, but have not been independently verified for current use. Request current directions from the operator or site manager rather than following an old entry description.

Questions, answered

Is Ski Run suitable for my certification?

The record lists Deep/Advanced + experience. That does not establish suitability for every route or day. Share your training, recent experience and equipment needs with the operator and ask about the specific proposed dive.

Can I book Ski Run through YouDive?

YouDive is an independent research directory. Contact an operator directly to confirm whether it currently runs the trip, the inclusions and the booking terms.

What you might see

Glassfish schools, trevally, whitetip reef sharks, spotted garden eels (large colony), grey reef sharks, reef fish

Location

Reef edge and sand slope on the north-western rim of the southern atoll, just south-west of Cabbage Patch, at -12.0962, 96.8409.

Facilities nearby

Departs West Island; no shops or fuel on the outer islands – Cocos Dive supplies lunch on day trips.

Before you make plans

Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.

Record updated 27 Sept 2026. Source claims are being reviewed.

More records in this region

Grouped by directory region, not distance or equivalent difficulty.

Operators linked to this site

These links are recorded in the directory. Confirm current trips and site access directly.