Australia

The coastline of Australia boasts a stunning array of picturesque islands

North Stradbroke Island, or Straddie as known colloquially, is a stone’s throw from Brisbane. It has long been a popular destination for Brisbanites to escape the hustle and bustle of city life for a relaxing weekend away. Straddie, and its neighbour Moreton Island, sit in Moreton Bay and act as two huge barriers protecting the city of Brisbane from the might of the Pacific Ocean. They are also one of the reasons that Brisbane is bereft of the stunning sandy beaches that the Gold and Sunshine Coast are famous for. These barriers force the Brisbane River to deposit its silty cargo in the bay rather than out to sea, creating mud flats instead of golden beaches.

Fortunately, North Stradbroke Island, the secondlargest sand island in the world, has plenty of the sandy beaches that Australia is famous for, and it is only a 30-minute ferry ride from Brisbane. These sandy beaches make the island a mecca for surfers and holidaymakers and over the school holiday, the population swells to more than twice its normal size. The area is also a popular destination for divers, and the temperate waters around North Stradbroke Island contain an abundance of marine life and a superb array of dive sites.

The diving is excellent year-round, but there are two distinct seasons which each provide very different animal encounters. In the summer months, from November to April, the main attraction is the manta rays and leopard sharks. In the winter months from May to October, grey nurse sharks aggregate in large numbers. This is also when the spectacular humpback whale’s migration occurs. The diving here is very weather-dependent, with some of the sites exposed to the open ocean and prone to strong currents. However, there are some sheltered areas, so there is usually a Plan B to fall back on if the weather is not very co-operative.

There are three main dive areas at Straddie - Shag Rock, Flat Rock, and Manta Bommie. Shag Rock is close to the island, and as a result, is the most sheltered. Currents are usually minimal on this site. With a maximum depth of around 16m, it is ideal for courses, beginner divers, or even advanced divers looking for a more-sedate dive. Wobbegongs and bamboo sharks can be found lounging on the reef or hiding under a rocky overhang. Scorpionfish, lobster, crabs and octopi hide in the numerous crevasses and nudibranch of different shapes and sizes move sluggishly around this spectacular underwater realm. Flat Rock is one of the signature dive sites of the area. It is around 2.5 nautical miles from the northern tip of the island and reaches a depth of approximately 35m in some parts. The northeast side of this vast dive site faces the open ocean, and deep gutters have been gouged into the rock by the relentless onslaught of the seas, forming a dramatic landscape of ridges and canyons. The winter months herald the arrival of the endangered grey nurse sharks, and the gutters are usually packed with these large docile creatures. Yearround inhabitants of the reef include hawksbill The sand tiger shark is a slow-moving coastal predator distinguished by its flattened, conical snout and spiked, protruding teeth similar to the tiger and loggerhead turtles, wobbegong sharks, whitetip reef sharks, the occasional bull shark, numerous rays and a good smattering of pelagics. shark. The sand tiger shark has small eyes and light brown skin that resembles sand, which helps the shark blend in.

Scuba Diver Australia and New Zealand Editor-at-Large Adrian Stacey extols the virtues of North Stradbroke Island, and explains why he always looks forward to a visit to the multitude of dive sites off ‘Straddie’

Photographs by David Biddulph & Adrian Stacey

The southwest side of Flat Rock has a very-different, moregentle topography. Layers of undulating rock roll, gently from its summit to the ocean floor, pockmarked with the occasional coral bommie. A variety of soft corals and hard corals cling to the rocky topography, and the reefs are home to numerous colourful fish, including blue tangs, clownfish, butterflyfish and rainbow wrasse, to name a few. On a recent dive here, we encountered an immense school of big-eyed jacks. At times, this swirling mass of fish engulfed the entire group of divers and entertained us for a good ten to 15 minutes, constantly morphing into a variety of different shapes. The previous day a great hammerhead had been spotted around the school, no doubt in search of dinner, but there was no sign of the creature on this occasion.

Manta Bommie is a small rocky reef located just of the north tip of North Stradbroke Island. The reef sits at a depth of around 15m and is surrounded by substantial sandy plains. Three bommies sit onto the reef and reach about 5m from the surface. The conditions here can challenging as the site is prone to strong currents and swells. During the winter months, Manta Bommie is somewhat desolate and rarely dived. However, during the summer months it explodes into

While stingrays prefer digging through the sandy sea bottom, manta rays love to cruise the open oceans in tropical and sub-tropical areas, and only get close to the seabed to get cleaned. In fact, mantas have to swim constantly to stay alive!

life. Leopard sharks arrive in their hundreds and can be found lounging on the sandy seabed. They are joined by shovelnose rays, whiptail rays and eagle rays. The main attraction, though, is the manta rays, who turn up in large numbers to stop at this somewhat innocuous location to visit one of the cleaning stations and feed. Manta Bommies receives rave reviews from most people who dive this little-known gem, and it is considered the second most-important gathering site for mantas in Australia. In addition to the three main areas, there are several other sites, including Boat Rock, Roaring Deep, Seven’s Reef and 29 Fathom Reef. These are generally for more advanced and technical divers due to their depth and often challenging conditions.

Boat Rock is located a little to the north of Manta Bommie. This large pinnacle drops down to a depth of around 25m. Strong currents usually sweep over this exposed dive site, so while it is not an easy place to dive, it does attract large pelagic fish like barracuda and sharks, that wait here in large numbers for a meal to be swept by.

As the name alludes to, Roaring Deep is a deep drift dive just off Flat Rock; a swift current takes divers on an exhilarating journey across the reef at a depth of around 25-30m. Large fever of eagle rays and mobula rays, bull, sandbar and whaler sharks are often encountered on this spectacular dive.

Seven’s Reef is a site more suited to tech and rebreather divers. The shallowest point of this site is around 20m, the deepest part around 50m, large 20m pinnacles rise from the seabed, and the area is a popular place for bull sharks, bronze whalers and sandbar sharks to hang out. 29 Fathom Reef, with its strong currents and reefs between 50-60m deep, is another one for the tech divers. Large schools of fish congregate here, and they, in turn, attract barracuda, kingfish and, of course, plenty of sharks.

Diving at Straddie can be done from the mainland with one of the dive shops in Brisbane, and depending on their departure point, the boat ride can take between one and a half to two hours. The other option is to dive with Manta Lodge, the only dive centre located on the island itself. Manta Lodge is a well-run and professional dive centre. It is clear that the owner James and the manager, Dan, are passionate about the diving at Straddie, and this translates to their staff, who have all been excellent on the occasions I have dived there. Warm rain jackets are provided for the surface interval in the colder months, and safety is clearly

of paramount importance. They have several dive festivals throughout the year, including Shark Fest and Nudi Fest.

Manta Lodge is also gaining an excellent reputation among technical divers. They can offer full support, including boosted oxygen and helium on-site, cylinders for both open circuit and CCR, along with Suex diver propulsion vehicle rental. Training is also available on both open circuit and rebreather technical diving. They also hold an annual tech diving weekend with guest speakers, equipment demos and dive charters to some of the aforementioned dive sites.

Getting to North Stradbroke Island is easy. Ferries leave from the Brisbane suburb of Cleveland hourly, and the 5.55am ferry will get you to the island in time for the morning dives with Manta Lodge. You can then get a ferry back and be home just after lunch. Alternatively, if you are planning an overnight trip of a few days away, there is YHA accommodation at the dive centre, a campsite just opposite, and several hotels are only a short drive away. There are also plenty of AirB&B options, but over the school holidays, these quickly book up. North Stradbroke Island should be at near the top of anyone’s list of places to visit while in Brisbane or, for that matter, Queensland. The diving is magnificent, and with Manta Bommie, they have one of the top dive sites in Australia just on their doorstep.

Add to this the stunning beaches, relaxed atmosphere, and it is the perfect place to visit for families looking for some adventure and avid divers alike. n