

Outer Tube is a boat-access reef dive off New South Wales that rewards beginners with some genuinely exciting encounters, provided conditions are right. The site runs deep, from 15 to 31 metres, so stick to the shallower sections of the reef where you will find nudibranchs, tubeworms, and sponges covering the reef structure. Visibility ranges from 10 to 30 metres, so on a clear day you can watch cuttlefish and weedy sea dragons without needing to get too close. Port Jackson sharks and moray eels are commonly spotted resting in crevices, and a large stingray is a regular presence. There is no current to manage, which makes this a comfortable dive for those building confidence.
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The best months to visit run from December through to May, when conditions are most settled. Always check locally about breaking waves before entering, as surface conditions can change and this is a boat entry only.
The site can be accessed from shore by a difficult walk through the Beecroft Weapons Range, which has restricted opening hours. It involves traversing down a cliff face. Due to the difficult shore access, it is also visited by dive boats.
Access from shore is hazardous, requiring a walk down a cliff face. The area is a well-known land-based game fishing spot, which could create potential entanglement or interaction hazards.
Depth
15-31m
Visibility
10-30m
Skill Level
Beginner
Entry
Boat
Boat required
Water Temp
17-23°C
Current
None
Typical Dive
60 min
Best Time
Jan, Feb, Mar, Apr, May, Dec
Outer Tube in Jervis Bay, New South Wales reaches depths between 15 and 31 metres. The site is suitable for beginner divers with Open Water certification, making it accessible whilst still offering interesting deeper sections. The gradual depth range allows divers to explore different zones during a single dive.
Outer Tube is home to weedy sea dragons, Port Jackson sharks, huge stingrays, and moray eels. Divers also encounter nudibranchs, colourful sponges, and tubeworms encrusting the reef structure. The site's diverse marine ecosystem makes it particularly rewarding for macro photography and species spotting.
An Open Water certification is required to dive Outer Tube near Jervis Bay. The site is classified as beginner-friendly despite reaching depths of 31 metres, with no current to manage. Divers should be comfortable with boat entries and familiar with temperate water conditions.
The best months to dive Outer Tube are December through May, covering the Australian summer and early autumn. During this period, water temperatures range from 17 to 23 degrees Celsius and visibility typically reaches 10 to 30 metres. These months offer the most stable conditions and warmest water for comfortable diving.
Night diving is available at Outer Tube in Jervis Bay. The site's beginner-friendly layout with depths from 15 to 31 metres makes it suitable for after-dark exploration. Night dives reveal nocturnal species including Port Jackson sharks and active moray eels that emerge to hunt.
Outer Tube is accessed by boat from Jervis Bay in New South Wales. The site requires boat entry due to its offshore location, though boat hire is not mandatory as local dive operators service the area. Divers should be aware of potential breaking waves when planning surface intervals.
The primary hazard at Outer Tube is breaking waves at the surface, particularly during entry and exit procedures. The site itself has no current and is beginner-friendly underwater. Divers should coordinate boat entries carefully and maintain awareness during surface intervals to avoid wave impact.
Outer Tube in Jervis Bay is well-suited for beginner divers and snorkellers. Conditions are typically calm with easy entry and shallow depths.
A 5mm wetsuit is recommended for diving at Outer Tube in Jervis Bay. Water temperatures range from 17°C to 23°C.