The Brothers Islands — Big Brother and Little Brother — are two small, remote islands rising from deep water approximately 67 kilometres off the Egyptian coast. For many Red Sea divers, the Brothers represent the pinnacle of what liveaboard diving in this region can offer: big pelagics, pristine walls, historic wrecks, and the feeling of being genuinely offshore.
Here is what to expect when you dive the Brothers.
Getting There
The Brothers are accessible only by liveaboard. The crossing from Hurghada takes approximately 6 to 8 hours depending on sea conditions, typically overnight. You leave in the evening, sleep during the crossing, and wake up at the islands ready for a dawn dive.
This is open-water passage. The sea can be rough, especially in winter months. If you are prone to seasickness, take medication the evening before departure. The crossing is part of the experience — and the payoff is worth every hour.
Big Brother
Big Brother is the larger of the two islands — roughly 400 metres long — and features a distinctive lighthouse that has been operational since 1883. The diving here centres on two main attractions: the wall and the wrecks.
The wall. Big Brother's reef drops vertically from just below the surface to well beyond recreational limits. The wall is covered in soft corals — enormous gorgonian fans, vibrant alcyonarians in red, orange, and purple — creating one of the most photogenic underwater landscapes in the Red Sea. Grey reef sharks patrol the blue, and on good days, hammerhead sharks cruise below 25 metres.
The Numidia. A 130-metre cargo ship that sank in 1901 after running aground on the northern tip. She sits on the wall between 10 and 80 metres, making her accessible to both recreational and technical divers. The upper sections are heavily encrusted with hard and soft corals, and the stern section, deeper on the wall, is remarkably intact. This is one of the Red Sea’s most atmospheric wreck dives.
The Aida. A smaller vessel that sank in 1957, sitting deeper on the wall between 30 and 65 metres. Less visited than the Numidia but equally impressive for experienced divers. The wheelhouse and deck structures are identifiable, and the site attracts schooling fish.
Little Brother
Little Brother is the smaller island — just a rock plateau, really — but the diving is arguably even more exciting for pelagic encounters. The entire island can be circumnavigated on a single dive at recreational depths.
Hammerhead sharks. Little Brother is the Brothers’ hammerhead hotspot. From February to June, schools of scalloped hammerheads gather in the blue off the northern and eastern edges of the plateau. Early morning dives at dawn offer the best chances — drop to 25 to 30 metres, hover off the wall, and watch the blue. Patience is key. The hammerheads may appear as distant silhouettes at first, then move closer as they follow their patrol routes.
The plateau. The top of Little Brother sits at around 4 to 6 metres, making it an excellent safety stop area. The shallow reef is healthy and full of life — lionfish, moray eels, groupers, and clouds of anthias. After the adrenaline of the deeper pelagic encounters, the plateau is a beautiful place to decompress.
Currents. Little Brother is exposed. Currents can be strong and unpredictable, changing direction during a single dive. Your dive guide will read the conditions and choose the entry and exit points accordingly. Drift diving skills and SMB deployment are essential here.
What You Might See
The Brothers are a pelagic crossroads. Depending on the season and conditions, you may encounter:
- Scalloped hammerhead sharks — peak season February to June, especially at dawn
- Grey reef sharks — year-round, patrolling the walls and drop-offs
- Thresher sharks — occasional sightings below 30 metres, more common at Daedalus
- Oceanic whitetip sharks — increasingly rare but still seen, especially in autumn
- Napoleon wrasse — resident on both islands, some impressively large
- Giant trevally and barracuda — schooling in the blue, often hunting at dawn
- Manta rays — occasional summer visitors
- Dolphins — spinner and bottlenose dolphins are common in the crossing and around the islands
There are no guarantees with marine life — the Brothers are wild water, not an aquarium. But the probability of significant pelagic encounters here is higher than almost anywhere else in the Red Sea.
Conditions and Requirements
Certification. Advanced Open Water or equivalent is the minimum. A minimum of 50 logged dives is strongly recommended, with recent open-water experience. The Brothers are not the place for rusty skills.
Currents. Expect currents on most dives. Sometimes gentle, sometimes strong. Negative entries (stepping off the boat and descending immediately) are common. You need to be comfortable with drift diving, quick descents, and deploying an SMB from depth.
Depth. Recreational divers typically operate between 15 and 30 metres at the Brothers. The wrecks extend deeper for those with appropriate training. Technical divers can explore the deeper sections of the Numidia and Aida with proper gas planning.
Visibility. Usually excellent — 25 to 40 metres is typical. The open-water location and deep water around the islands keep visibility consistently high.
Water temperature. 23 to 27°C depending on season. A 5mm wetsuit is recommended for most of the year, with a hooded vest for winter months.
When to Go
Every month offers something at the Brothers, but the prime season depends on what you want to see:
- February to June — Hammerhead season. The best months for schooling scalloped hammerheads at Little Brother.
- September to November — Oceanic whitetip season. Also the warmest water and calmest seas.
- Year-round — Grey reef sharks, the wrecks, the walls, and the soft corals are always there.
If hammerheads are your primary goal, book a March to May trip. If you want the most comfortable conditions and a variety of encounters, September to October is hard to beat.
Practical Tips
Bring a reef hook — some operators allow their use at the Brothers for holding position in current while watching the pelagic show. Check with your operator beforehand.
Carry a safety sausage (SMB) and know how to deploy it. You will use it on nearly every dive here.
Manage your air and nitrogen carefully. Four dives per day over multiple days at the Brothers means your nitrogen loading accumulates. Stay well hydrated, rest between dives, and do not push your limits on day three.
The Brothers Islands are not a beginner destination. They reward preparation, experience, and a willingness to accept that the ocean sets the agenda. But for divers who are ready, there are few places in the world that deliver encounters this consistently and dramatically.