Dive Site: Sponge Heaven

About Sponge Heaven

Sponge Heaven is a renowned wall dive located in Milne Bay Province, Papua New Guinea, distinguished by its impressive vertical topography and rich marine biodiversity. This site features a sheer wall that plunges dramatically from a shallow shelf, offering divers an extraordinary descent alongside a canvas of vibrant marine life. The area is celebrated for its critical role within one of the world's most biodiverse coral reef systems, making it a prime example of Milne Bay's underwater splendor. The dive site begins with a shelf just 3 feet below the surface, leading to a wall that drops to a depth of over 350 feet. This extensive wall is intricately honeycombed with small caves and crevices, providing shelter and habitat for a vast array of marine organisms. Divers will encounter a significant presence of large gorgonian fans, magnificent coral cover, and especially, a huge variety of sponges, giving the site its evocative name. While the sources do not explicitly detail seasonal changes for Sponge Heaven's marine life, Milne Bay generally offers rich encounters year-round. Expect to find a multitude of small fish species, various nudibranchs, and other fascinating critters inhabiting the wall and its formations. The healthy coral ecosystems further support a vibrant display of life. Diving at Sponge Heaven offers a captivating experience, whether during the day to appreciate the intricate details of the wall or as a night dive to witness the nocturnal activity of its colorful inhabitants. Currents are generally slight to mild, making it accessible for intermediate divers, though boat entry and careful navigation along the wall are standard. It is typically combined into liveaboard itineraries exploring the diverse sites of Milne Bay.

Dive site facts: Sponge Heaven

Depth

1–107 m

Current

Slight to mild

Visibility

10–30 m

Water temperature

28–31°C

Entry

Boat dive

Level

Intermediate

Dive type

Wall, night, reef

Night dive

Possible

Region / port

Milne Bay Province

Coordinates

5.2500° S, 145.8150° E

Conditions & Currents

Sponge Heaven typically experiences slight to mild currents, making it a manageable dive for intermediate levels. While specific current directions are not detailed, the generally calm waters of Milne Bay mean currents are usually not a major concern. Visibility at this site can range from 10 to 30 meters. Entry is always by boat, and divers navigate along the sheer wall. Due to its wall topography and potential for deeper exploration, careful air management is important, although most of the action can be enjoyed at shallower depths. There are no reports of significant surge, thermoclines, or heavy boat traffic directly impacting the dive experience at Sponge Heaven.

Marine life & sighting chances

Nudibranchs

common

Small fish species

common

Brittle stars

occasional

Crinoids

occasional

Shrimp species

occasional

Anthias

occasional

Damselfish

occasional

Fusiliers

occasional

Chromis

occasional

Coris

occasional

Butterflyfish

occasional

Angelfish

occasional

Crocodilefish

occasional

Lionfish

occasional

Dive profile & how the dive runs

Your dive at Sponge Heaven begins with a boat entry, dropping onto a shallow shelf only 3 feet below the surface. From here, the dive progresses along a dramatic sheer wall that extends to depths exceeding 100 meters. The main focus of the dive is exploring the intricate details of this wall, which is honeycombed with small caves and adorned with a vast array of sponges, large gorgonian fans, and hard corals. You'll descend gradually, observing the diverse macro life and schooling small fish sheltering in the wall's formations. Turnaround is typically dictated by air consumption or depth limits, usually staying within recreational depths to maximize bottom time in the most vibrant sections. The safety stop is conducted along the shallower parts of the wall or near the reef crest, allowing for continued observation of smaller marine creatures before surfacing for boat exit.

Underwater photography

Sponge Heaven offers excellent opportunities for both wide-angle and macro photography. For wide-angle shots, capture the grandeur of the sheer wall adorned with impressive sponges and large gorgonian fans, especially where light penetrates the shallower sections. Macro photographers will thrive among the honeycombed crevices and prolific soft corals, focusing on the numerous nudibranchs, shrimp, and small fish species. A powerful strobe is beneficial to bring out the true colors of the corals and sponges against the deeper blue. Buoyancy control is paramount to avoid contact with the fragile wall and its inhabitants. During night dives, focus on capturing the vibrant colors and behaviors of nocturnal critters, using dive lights and focus lights to isolate subjects.

Combine with nearby dive sites

• Wahoo Point

  Located 0.8 km away, known for pelagics and large elephant ear sponges.

• Barracuda Point

  Situated 7.4 km from Sponge Heaven, often frequented by barracuda.

• Coral Garden

  Found 7.7 km away, offering a distinct coral reef experience.

• Deacon's Reef

  A fantastic wall dive with large gorgonian fans and sponges.

Getting there & logistics

Access to Sponge Heaven, like many Milne Bay dive sites, is primarily via liveaboard cruises departing from Alotau, the capital of Milne Bay Province. International flights typically arrive at Jacksons International Airport (POM) in Port Moresby, followed by a domestic connecting flight to Alotau. Most liveaboard itineraries in Milne Bay are 7 to 10 days, combining various reef, wall, and muck dives. While specific permits for Sponge Heaven aren't mentioned, dive operations often manage local clan fees for site usage as part of the overall trip cost. Some sites may also be accessible from land-based resorts like Tawali Resort, which is located nearby and uses its service wharf as a point of reference for Sponge Heaven.

Safety & environment

For diving in Papua New Guinea, comprehensive dive insurance covering medical emergencies and evacuation is strongly advised, as medical facilities are limited. The nearest recompression chamber is located in Port Moresby. In case of a diving emergency at Sponge Heaven, evacuation would typically involve initial stabilization on the liveaboard or at a nearby resort, followed by transfer to Alotau and then potentially a flight to Port Moresby or Australia, depending on the severity. Site-specific hazards at Sponge Heaven include the sheer wall, requiring good buoyancy control to avoid accidental deep excursions. Lionfish and urchins may be present near shallower structures, so careful handling and awareness are necessary. Always dive with a reputable operator, follow your guide's instructions, and adhere to safe diving practices.

Who it suits — and who it doesn't

FAQ

Sponge Heaven FAQ

Liveaboards diving Sponge Heaven

These liveaboards may visit Sponge Heaven on selected itineraries — the exact dive sites depend on departure, weather and conditions.

Oceania

Papua New Guinea

16 guests27 m

$333/day

Febrina

Papua New Guinea

12 guests22.25 m

$389/day