Pyramid Rock, at the south-eastern end of Bowen Island, is one of the deeper and more colourful dives at the Jervis Bay entrance. A massive pyramid-shaped rock on the shoreline marks the site, and below it the sounder shows a rise from 34 m to 23 m. The main feature is a wall about 10 m or more high extending at least 100 m to the north, and further south and west. The sand bottom lies at up to 36 m and is scattered with large boulders three to four metres high.

The highlight is the sea whips. McFadyen describes hundreds of them, every one hosting two or more tiger anemones – a striking and unusual sight. Gorgonians cover the wall and boulders, and the fish life includes bastard trumpeter, yellowtail, striped seapike, leatherjackets, firefish and eastern blue devilfish, with kingfish and bonito occasionally passing. Fish numbers vary from dive to dive, from good to sparse.

The depth makes this a dive for experienced divers only, and anchoring needs thought: on top in westerlies, on the bottom in southerlies, with plenty of line in northerly or westerly winds to stop the anchor slipping off the 23 m top into 36 m. Access from Murrays ramp through the narrow gap between Bowen Island and the mainland is only for small boats in very calm seas at high tide. The site is within Booderee National Park waters and a sanctuary zone. For Advanced divers with nitrox and good gas planning, the sea-whip garden is one of the most memorable scenes in Jervis Bay.

Charters depart Huskisson (Dive Jervis Bay; boats in Currambene Creek), about 15–20 minutes across the bay to Bowen Island. Private boats can launch at the Murrays Beach ramp in Booderee National Park (park entry fee; ramp faces Bowen Island, 5 minutes away) or at Huskisson/Callala. From Huskisson run past the northern end of Bowen Island and south down its ocean side to the southern tip.

From Murrays ramp the gap between the island and the mainland is only passable in extremely calm conditions at high tide in boats under 6.5 m – keep to the southern side. The sounder shows a rise from 34 m to 23 m at 35° 07.389' S 150° 46.320' E; a massive pyramid rock on the shoreline marks the spot.

Bowen Island shelters the southern side of the Jervis Bay entrance. The inside and north-western corner (Nursery, Aztec, North Bowen) are protected from southerly swell and are often the only diveable sites when big southerlies close the outer coast, although waves can break on the points in large seas. The eastern and southern faces are exposed to south-easterly and southerly swell and want under about 1.5 m.

An outgoing tide can produce strong current around the island's points. Visibility typically 10–20 m. The south-eastern end is exposed to southerly and south-easterly swell.

In northerly or westerly winds use plenty of anchor line so the anchor does not slip off the 23 m top into 36 m.

Descend to the wall and follow it north along its 10 m+ face for up to 100 m, dropping to the boulder-strewn sand at 30–36 m to look at the sea whips, then return along the upper wall and reef top at 23–25 m.

EAN28 suits the 23–30 m profile; plan conservative no-deco times.

Dive Jervis Bay (Huskisson; boats Avalon and Genesis) runs double boat dives most days, and Deep 6 Diving Jervis Bay / other Huskisson operators also visit; site chosen on the day according to swell and wind.