

The Basin is a sheltered reef site sitting in easy shallow waters of 1 to 10 metres, making it a comfortable choice for beginner divers and snorkellers. Visibility regularly reaches 15 to 30 metres, so you can take your time and actually see what's around you. The reef supports a relaxed mix of marine life including buffalo bream, snapper, wobbegong sharks resting on the bottom, western rock lobsters tucked into crevices, stingrays, and various crustaceans moving through the coral. Current is mild, though be aware of surge near the reef and keep an eye out for boat traffic on the surface.
-31.98957, 115.53540
The best conditions fall in spring (September to November) and autumn (March to May) when the water is calmer and visibility is at its peak. Facilities including toilets and showers are available on site, so there is no need to rush your post-dive rinse.
The Basin is located on the north side of Rottnest Island and is a 10-minute walk from the main Thomson Bay settlement. Follow the signs north from the main jetty.
While generally protected, strong afternoon winds in summer can create some surface chop. The area is popular, so be aware of other swimmers and snorkelers.
Depth
1-10m
Visibility
15-30m
Skill Level
Beginner
Entry
Shore
Water Temp
19-28°C
Current
Mild
Typical Dive
60 min
Best Time
Mar, Apr, May, Sep, Oct, Nov
The Basin in Rottnest Island, Western Australia, hosts diverse marine life including buffalo bream, snapper, and wobbegong sharks. Divers regularly encounter western rock lobsters, stingrays, and various crustaceans amongst coral formations. The shallow depth range of 1 to 10 metres makes wildlife observation accessible for all skill levels.
The Basin is an ideal beginner dive site with depths ranging from just 1 to 10 metres and only mild currents. The shore entry eliminates boat requirements, and visibility between 15 and 30 metres provides excellent conditions for new divers. An Open Water certification is the only prerequisite for diving this site.
The Basin offers visibility between 15 and 30 metres throughout the year. Water temperatures range from 19 to 24 degrees Celsius, with the clearest conditions typically occurring during the recommended diving months of March, April, May, September, October, and November. The mild currents further contribute to stable underwater visibility.
The optimal months for diving The Basin are March, April, May, September, October, and November. These periods offer the best combination of water clarity, temperature stability between 19 and 24 degrees Celsius, and favourable sea conditions. The site remains accessible year-round for shore diving.
The Basin features convenient shore entry from Rottnest Island, eliminating the need for boat access. Divers can walk directly into the water from the beach, with depths gradually increasing from 1 metre at the shoreline to a maximum of 10 metres. Facilities including toilets and showers are available on site.
An Open Water diving certification is required to dive The Basin. This entry-level certification is appropriate given the shallow maximum depth of 10 metres and mild current conditions. The beginner-friendly environment makes it an excellent site for newly certified divers to gain experience.
The main hazards at The Basin include boat traffic in the area and surge conditions during rougher weather. Divers should remain aware of vessel movements near the shore entry point and time their dives to avoid periods of strong wave action. The shallow depth range of 1 to 10 metres means surge can affect visibility and safety throughout the dive zone.
There is no entry fee to dive The Basin itself, though visitors may need to pay for ferry transport to Rottnest Island from Perth. The site offers free shore access with basic facilities including toilets and showers. This makes it an economical option for divers exploring Western Australia's underwater attractions.
A 5mm wetsuit is recommended for diving at The Basin in Perth. Water temperatures range from 19°C to 28°C.
The Basin in Perth has depths ranging from 1 metres to 10 metres.
A typical dive at The Basin in Perth lasts approximately 60 minutes. Actual dive time depends on depth, air consumption, and conditions.