

Cabbage Tree Island offers beginner divers a rare chance to encounter grey nurse sharks in comfortable conditions. Located off the New South Wales coast, this boat dive combines several underwater environments in one site, with depths ranging from 4 to 20 metres and visibility between 1 and 15 metres. The gentle currents make it manageable for newer divers building their skills. The main attraction is the resident population of grey nurse sharks, often seen cruising along the wall or resting in gutters. You'll also spot Port Jackson sharks wedged into crevices and wobbegong sharks camouflaged against the reef. The rocky walls host sponge gardens in vibrant colours, while moray eels peer from their holes and rays glide over patches of seagrass. Keep your eyes open for smaller creatures too. Octopuses hide among the rocks, and if you look carefully in darker spots, you might find pineapplefish or the striking donut nembrotha nudibranch. Sea turtles occasionally pass through the area. The site can experience some surge, so maintain good buoyancy control and be mindful of your position relative to the reef. Winter months from May to September offer the best conditions for diving here.
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The site dives best between May and September when visibility tends to improve and grey nurse and Port Jackson sharks are more reliably present. Let your skipper know it is your first time, as the surge near the wall can catch new divers off guard.
The site is accessible by a short boat trip from Nelson Bay marina. Several local dive operators offer charters to the island.
The northern and eastern sides of the island are exposed to easterly and northerly swells and can only be dived in calm conditions. The western side is much more protected.
Depth
4-20m
Visibility
1-15m
Skill Level
Beginner
Entry
Boat
Boat required
Water Temp
15-22°C
Current
Mild
Typical Dive
56 min
Best Time
Year-round
Cabbage Tree Island in New South Wales hosts an exceptional variety of marine life including grey nurse sharks, wobbegong sharks, and Port Jackson sharks. Divers regularly encounter sea turtles, octopus, pineapplefish, and the colourful donut nembrotha nudibranch among extensive sponge gardens. The site's depth range of 4 to 20 metres provides habitat for both benthic species and pelagic visitors.
The best months to dive Cabbage Tree Island are May through September, during the Australian autumn and winter seasons. Water temperatures range from 15 to 22 degrees Celsius during this period, with visibility reaching up to 15 metres. These cooler months offer optimal conditions for observing the site's resident grey nurse shark aggregations.
Cabbage Tree Island is suitable for beginner divers with Open Water certification, offering depths from 4 to 20 metres and generally mild currents. The site requires boat access from the Mid North Coast region but presents manageable conditions for less experienced divers. Surge can be present, so basic buoyancy control and awareness are necessary.
Access to Cabbage Tree Island requires boat transport from the Mid North Coast of New South Wales, with boat charter services available for dive trips. The site is located offshore and cannot be reached from land. Charter operators familiar with local conditions provide the safest and most practical access to this dive location.
An Open Water diving certification is required to dive Cabbage Tree Island in New South Wales. The site's maximum depth of 20 metres falls within the limits of entry-level certification, making it accessible to newly qualified divers. The mild current and beginner-friendly rating mean advanced certifications are not necessary.
Visibility at Cabbage Tree Island ranges from 1 to 15 metres depending on weather conditions and ocean currents. The best visibility typically occurs during the May to September dive season when calmer conditions prevail. Water temperature during these months ranges from 15 to 22 degrees Celsius, requiring a 5mm wetsuit or thicker.
Cabbage Tree Island has limited snorkelling appeal with a rating of 1 out of 5, as the most interesting marine life and sponge gardens are found at greater depths. The shallow areas at 4 metres offer some opportunities, but the site is primarily designed for scuba diving. Surge conditions can also make surface activities challenging.
There is no entry fee to dive Cabbage Tree Island in New South Wales. Divers only need to pay for boat charter services to reach the site, with costs varying by operator and trip duration. The absence of park fees or dive site charges makes it an affordable destination for experiencing grey nurse sharks and diverse marine life.
Yes, equipment rental is available at or near Cabbage Tree Island in Mid North Coast. Contact local dive operators for specific gear availability and prices.
A 7mm wetsuit or semi-dry is recommended for diving at Cabbage Tree Island in Mid North Coast. Water temperatures range from 15°C to 22°C.
Divers at Cabbage Tree Island in Mid North Coast should be aware of sharks. These encounters are generally rare and avoidable with proper awareness. Follow local safety guidance and maintain a respectful distance from all marine life.