Western Australia · Shore/Rock Platform

Cosy Corner

Overhangs full of blue devils, harlequin fish and foxfish on reef platforms close to shore near Augusta.

Margaret River & AugustaShore
YouDive mascot illustration; not a photograph or site map

Mascot illustration — not a photograph or site map.

Depth
1–7 m
Certification
Open Water
Access
Shore
Dive type
Shore/Rock Platform
Region
Margaret River & Augusta

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

Approximate area

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

Meet the site

Cosy Corner is a small sheltered cove on the Leeuwin coast near Augusta, and one of the few easy shore dives this far south. Marinelife.org.au describes reef platforms close to shore in about 7 m, with overhangs full of smaller fish such as scalyfin, blue devils, morwong, foxfish and harlequin fish, and warns about the steep hill from the car park when fully loaded with gear.

The overhangs are the attraction: western blue devils and harlequin fish are two of the most colourful temperate reef fish in Australia, and finding them in a few metres of water close to shore is a treat. Weed and kelp cover the reef tops, and the cove's shelter makes it pleasant on calm days.

It suits Open Water divers and snorkellers who are prepared for the climb back to the car. The offshore islands and reefs nearby (listed separately as Cosy Corner Offshore Reefs) are better reached by boat from Hamelin Bay.

There are no facilities at the site; Augusta has shops, fuel and accommodation.

The coast around Cape Leeuwin is where the Indian and Southern oceans meet, and it is one of the most exposed shorelines in Australia. The sheltered coves and bays near Augusta are the exceptions, which is why local divers value them. There is no dive shop in Augusta, so bring filled cylinders from Busselton or Perth, and remember that the nearest recompression chamber is at Fiona Stanley Hospital in Perth, about four hours' drive away. Ngari Capes Marine Park zoning includes sanctuary zones at Cape Leeuwin and East Flinders Bay, so check the maps before fishing or collecting.

What you might see

Scalyfin, western blue devil, morwong, foxfish, harlequin fish, western king wrasse, kelp and weed

Location

Reef platforms close to shore at Cosy Corner, off Cosy Corner Road about 11 km from the southern end of Caves Road near Augusta, in about 7 m.

Facilities nearby

Car park; no toilets or water; Augusta town nearby.

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.

Sources & further reading

marinelife.org.au

Record updated 26 Sept 2026. Source claims are being reviewed.

Operators linked to this site

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