Clown Valley, Alor: diving the anemone fields of Pura Island

Clown Valley, often referred to as Apuri or Anemone City, is a fringing reef situated along the eastern side of Pura Island in the Pantar Strait. The dive typically begins as a drift, often as the southern extension of a dive starting at Sharks Galore, allowing you to cover a significant stretch of this vibrant ecosystem. The topography transitions from volcanic black sand slopes to coral-covered terraces, all leading into a shallow reef that is predominantly carpeted in sea anemones. This unique geological setting, combined with the nutrient-rich currents, creates a distinct environment.

What immediately strikes you at Clown Valley is the sheer density of sea anemones. They form living carpets, covering almost every available hard substrate from the shallower reef terraces down to around 25 metres. These anemone fields are not just visually striking; they are bustling micro-habitats, each hosting its resident clownfish. You'll find yourself gliding over an undulating landscape of soft, swaying tentacles, punctuated by the darting movements of various clownfish species, creating a dynamic and visually rich experience.

Beyond the anemones, the reef structure itself is a blend of hard and soft corals, forming a complex architecture that provides shelter and foraging grounds for a wide array of reef inhabitants. As you drift, you'll observe the intricate patterns of growth, with hard corals forming foundational structures like small canyons and crevices, while soft corals add a flowing, dynamic element to the scene. This dual composition ensures that every turn reveals a new perspective on the reef's complex beauty, from wide-angle vistas to detailed macro observations.

The site's location in the Pantar Strait means you'll experience conditions influenced by cold water upwellings originating from the south seas. These upwellings, particularly noticeable after new and full moons, regulate the water temperature and bring in nutrient-rich waters. This influx of colder water is a key factor in attracting larger pelagic species, adding another dimension to the dive. While the focus is often on the anemone fields, keeping an eye on the blue can reward you with encounters with oceanic visitors.

One of the notable pelagic encounters at Clown Valley includes thresher sharks (Alopias pelagicus), which are known to cruise the colder currents along the slope. These sharks are sometimes observed at relatively shallow depths, around 10 to 15 metres, making for a memorable experience. Reef sharks (Carcharhinus melanopterus or Triaenodon obesus) are also present, patrolling the reef edges. These larger species add an element of excitement, contrasting with the intricate macro life found within the anemone gardens.

The macro life at Clown Valley is equally diverse, thriving amidst the anemones and volcanic sand. You can spend time observing various nudibranchs, pipefish, and the camouflaged leaf scorpionfish (Taenianotus triacanthus). Frogfish (Antennariidae) are also present, often blending seamlessly with their surroundings. For those with a keen eye, pygmy seahorses (Hippocampus bargibanti) can be found in specific gorgonian corals, and the elusive blue-ringed octopus (Hapalochlaena) might be spotted on the sandy patches.

Visibility at Clown Valley is generally good, ranging from 15 to 40 metres, allowing for clear views of the extensive reef and its inhabitants. The interplay of light filtering through these clear waters enhances the vivid colours of the corals and anemones, creating a living canvas that changes with the angle of the sun. This illumination highlights the delicate patterns and textures, inviting you to slow your pace and appreciate the intricate details of this underwater garden.

Clown Valley offers a unique combination of spectacular anemone reef scenery and rich macro life, set against a backdrop of volcanic sand and within a region known for its dynamic currents. It's a site that rewards both wide-angle appreciation of its vast anemone fields and close-up scrutiny of its smaller, often cryptic, residents. The potential for pelagic encounters, driven by the cold-water upwellings, further distinguishes this site within the Alor archipelago.