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Port Moresby · Papua New Guinea · Pacific

The Pinnacles, Port Moresby: PNG's vibrant coral towers

Descend into The Pinnacles to navigate colossal gorgonian fans and encounter a diverse community of reef residents and passing pelagics.

What makes this site special

  • Abundance of passing pelagic fish.
  • Magnificent gorgonian fan corals.
  • Vibrant pink seawhips and branching soft corals.
  • Rich variety of resident reef fish.
  • Encounters with pygmy seahorses (Hippocampus bargibanti).
  • Common sightings of sea snakes.
  • Excellent for underwater photography.

The Pinnacles about the site

Dropping into The Pinnacles, you're immediately struck by the sheer scale of the coral architecture. These submerged seamounts rise dramatically from the seabed, their facades draped in a tapestry of growth. The light filters down, illuminating the vibrant pink seawhips that sway gently, creating a dynamic backdrop for the reef's inhabitants. Your descent becomes a journey through a living sculpture, anticipating the pelagic encounters characteristic of open-ocean structures.

As you approach the main structures, the intricate details of the coral ecosystem emerge. The branching soft corals form dense thickets, providing shelter and hunting grounds for an array of resident reef fish. Their movements are a constant, intricate ballet, adding life and colour to every crevice. You’ll find yourself pausing often, observing the dynamic interplay between predator and prey, or simply admiring the healthy, thriving environment.

The Pinnacles is particularly renowned for its gorgonian fans, which can reach impressive sizes, creating a truly immersive experience. Navigating through these ancient, delicate structures demands careful buoyancy, allowing you to appreciate their complex beauty without disturbance. This careful observation is often rewarded with more subtle discoveries, especially for those with a keen eye for the smaller residents of the reef.

Among the numerous species that call The Pinnacles home, pygmy seahorses (Hippocampus bargibanti) can be found camouflaged among the gorgonians, requiring a patient and sharp-eyed search. These tiny masters of disguise are a highlight for macro photographers, demonstrating the site’s capacity to offer both grand vistas and intimate encounters. It's these moments of discovery that connect you more deeply to the site, revealing its hidden artistic details.

While the reef fish hold court, the promise of larger visitors always adds an extra layer of excitement to a dive at The Pinnacles. Passing pelagic fish are quite common here, often materializing from the blue as you explore the outer edges of the pinnacles. These larger species remind you that you are connected to the wider ocean, even when surrounded by the intimate beauty of the reef.

Sea snakes are also a common sight, gracefully patrolling the reef, their movements fluid and mesmerizing. Their presence is a reminder of the healthy ecosystem and the diversity of life that flourishes in these waters. For photographers, The Pinnacles offers endless opportunities, from the expansive coral formations to the subtle behaviour of its smallest residents, making every dive a potential portfolio builder.

Diving The Pinnacles: the marine life you’ll meet

Diving conditions

The best time to experience The Pinnacles is from late October until early December, a period characterized by calm seas and good visibility. During this window, you can expect optimal conditions for exploring the vibrant coral systems and observing marine life. Divers should be aware that from late December until early April, the wet season can lead to a decline in visibility across the region.

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