Nestled off the south eastern coast of Oman in the vast Indian Ocean, the Hallaniyat Islands are a true hidden treasure for those passionate about marine life and adventure. This remote archipelago, featuring the main islands of Al Hallaniyah and Al Sawda, is renowned for its untouched coral reefs and thriving underwater ecosystems. The islands boast huge schools of fish darting through crystal-clear waters, while lucky divers may find themselves swimming alongside majestic humpback whales, graceful manta rays, and gentle green turtles. The healthy marine life and abundant macro life make every dive a new discovery, with vibrant reefs and unexplored dive sites waiting to be revealed. Rugged and wild, the Hallaniyat Islands offer a rare opportunity to experience nature in its purest form, making them a must-visit destination for divers and explorers seeking the extraordinary.
Geography and Climate of Southern Oman
Southern Oman, home to the Hallaniyat Islands, is a region defined by dramatic landscapes and a unique climate. The coastline is marked by striking coastal cliffs and stretches of golden sand, with the Dhofar Mountains rising steeply from the sea. The Arabian Sea laps against the rugged shoreline, nurturing a rich tapestry of coral reefs, soft corals, and diverse fish species. Much like the famed Musandam Peninsula, the mainland features sheer cliffs that plunge into the sea, while inland, peaks soar above 2,000 meters, sheltering deep valleys and lush, high-altitude forests. The climate here is generally warm, with a distinct monsoon season that brings life to the region during the summer months. This blend of dramatic geography and favorable climate creates an environment teeming with marine life, making southern Oman a paradise for divers, nature lovers, and anyone eager to explore one of the world’s last untouched coastlines.
Diving and Exploration with Oman Explorer
For those seeking to truly immerse themselves in the wonders of the Hallaniyat Islands, diving with Oman Explorer is an experience like no other. This modern liveaboard vessel is designed for comfort and adventure, taking divers to some of the most remote and pristine dive sites in the Arabian Sea. From vibrant coral reefs to mysterious wrecks, each site offers a glimpse into the healthy marine life that thrives in these untouched waters. The Oman Explorer’s expert crew ensures every dive is safe and memorable, with opportunities for night dives that reveal a whole new world beneath the waves. Divers can expect encounters with humpback whales, playful dolphins, and elegant manta rays, all set against a backdrop of colorful corals and abundant fish life. With convenient access from Muscat airport and the option of a comfortable hotel stay in the city, Oman Explorer makes it easy to discover the hidden gems of Oman’s southern coast, all while supporting sustainable and responsible diving practices.
Hallaniyat Island 'Oman' Isopods (Periscyphis sp) in the Arabian Sea
£100.00
A rare desert isopod that will thrive in a drier enclosure.
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Origin: Warm desert islands off the coast of Oman.
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Scientific Name: Periscyphis sp
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Difficulty Level
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Size: 1.7cm
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Rarity: Rate
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Temperature: 24-27ºC
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Humidity: Low
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Diet: All the usuals however these tend to like fish flake a lot in particular
The Hallaniyat Islands rise out of the Indian Ocean, granite chimneys' surrounded by limestone bluffs, and rocky arid landscapes. Hot and dry for most of the year, only during Khareef, a windy foggy period from mid March to mid September, does the humidity increase as the fog rolls in from the ocean.
Little plant life and arid conditions in their natural range make these isopods a real rarity. Unlike most species that need higher humidity to allow them to breathe, these can thrive in low humidity. A great clean-up crew for Bearded Dragon enclosures, a variety of gecko enclosures, and many desert species. Also perfect to add to a dryer terrarium, such as those with desert-loving air plants, cacti, aloe, and other succulents.
UNESCO has outlined a plan to make the Hallaniyat Islands a national park, meaning that the collecting of these species will be restricted or even stopped, luckily we have fantastic breeding stock, but it's likely in the future these may become difficult to buy in the UK.
With less than 10cm of rain annually in their native range, keeping Hallaniyat Island 'Oman' Isopods can be straightforward. A simple misting in one corner of the enclosure every so often can be all they need in terms of water. Watch their behaviour and if they're gathering close to the wet area increase the misting slightly. They need to be kept warm, 24-27ºC. If kept in a bioactive terrarium with a temperature and humidity gradient then they will find their ideal temperature. In the wild they only come out at night and gather in large groups, this is likely to avoid the hot daytime temperatures, in your enclosure you may be lucky to see a group of these starting to gather in the evening as they get bolder.
In their natural habitat there are low levels of plant life, but lots of bird guano, but they are relatively flexible in terms of feeding. Make sure the protein levels are adequate, with foods such as fish pellets, and similar. Ensure they have a place that mimics their natural rocky habitats, and consider adding mosses as many species grow in their natural range.
A rare, slightly challenging, but very rewarding species of isopod that will make a great addition to your collection.
Isopod Species and Conservation
Beyond their stunning reefs and charismatic megafauna, the Hallaniyat Islands are also home to a fascinating array of isopod species. These small but vital crustaceans play a key role in the health of coral reefs, breaking down organic matter and recycling nutrients to support the broader marine ecosystem. However, like many marine species, isopods face growing threats from climate change, pollution, and overfishing. Recognizing the importance of these creatures, the Oman government and conservation organizations are working together to protect the islands’ delicate reefs and the diverse marine life they support. Divers and visitors can help by supporting sustainable tourism and conservation initiatives, ensuring that the unique species of the Hallaniyat Islands—including their rare isopods—continue to thrive for generations to come.
Tourism and Sustainability
Tourism in the Hallaniyat Islands is still in its infancy, offering a rare chance to experience a truly untouched natural paradise. The Oman government has taken proactive steps to ensure that this growth is sustainable, establishing marine protected areas and implementing strict regulations on fishing and diving. Eco-friendly liveaboard vessels like the Oman Aggressor provide a comfortable and responsible way to explore the islands, with a strong emphasis on minimizing environmental impact and supporting local conservation efforts. By choosing responsible tour operators, respecting local guidelines, and participating in conservation programs, visitors can help preserve the islands’ pristine marine life and natural beauty. Sustainable tourism ensures that the Hallaniyat Islands remain a haven for discovery, allowing future generations to explore, enjoy, and protect this remarkable corner of Oman.
