Carall Bernat — The Pinnacle That Taught Me What a Marine Reserve Can Do

I have dived Carall Bernat more times than I can count. Literally — I stopped tracking individual dives here years ago. It is the site I bring visiting divers to when I want them to understand what the Illes Medes is about. Not because it is the easiest or the most accessible, but because in a single dive it shows you everything: the gorgonian walls, the grouper population, the pelagic visitors, the architecture of Mediterranean rock shaped by millions of years of sea.

It is also a site that rewards knowledge. The better you understand what you are looking at, the better the dive gets.

The site

Carall Bernat is a rocky pinnacle at the southern end of the Medes archipelago, near the Tascó Gros and Tascó Petit. Above water, it is a narrow limestone spike rising 72 meters — impressive from the boat. Below water, it is a roughly 20-meter-diameter column with vertical walls, arches, crevices, and platforms spreading out at the base.

The walls are covered in gorgonians. Primarily Paramuricea clavata — the violet/red sea fans — along with Eunicella species in blue and yellow. At depth, the coverage is dense and largely healthy. These are slow-growing organisms. A large Paramuricea fan grows perhaps a centimeter per year. The bigger specimens you see on these walls are older than the marine reserve itself. That fact alone should change how you look at them.

The dive is a circumnavigation. You drop in, choose a direction, and follow the wall around the rock. The architecture changes as you go — open wall gives way to arches, crevices open into small canyons at the base, platforms extend outward where the larger predators congregate.

Depth and how to dive it

Sources list the maximum depth anywhere from 40 to 50 meters. In practice, the seabed at the base of the pinnacle is around 45-50 meters, but that is not where you should be spending your dive. The site is best experienced at two depth ranges, and your dive center will choose based on conditions and your level.

The full circumnavigation — 25 to 30 meters. This is the dive that made Carall Bernat famous. You circle the entire pinnacle at depth, gorgonian walls on both sides, looking outward into the blue for pelagics and inward at the wall for the smaller life. At the base, groupers patrol the canyons and platforms. You need solid buoyancy control, comfortable air management at depth, and ideally an Advanced Open Water certification or equivalent. Nitrox 32% is recommended — at 30 meters, the extra no-decompression time makes a real difference.

The wall dive — 15 to 18 meters. Stay on one side of the rock, shallower. Less dramatic in scope, but the marine life is still excellent — groupers, gorgonians, nudibranchs on the fans. You get more bottom time and a more relaxed dive. This is not a consolation prize. Some of my most enjoyable dives at Carall Bernat have been at 15 meters with good visibility, watching a grouper follow me along the wall.

The shallow zone between Carall Bernat and the Tascons — only about 5 meters deep — is surprisingly productive. Nudibranchs, small groupers, anemones. Worth your safety stop time.

The groupers

Epinephelus marginatus. The species that defines Medes diving, and Carall Bernat is where you understand why.

The Scubago database logs 612 sightings at this site alone, peaking in July and August with 166 and 199 sightings respectively. But numbers are statistics. What they do not convey is the behaviour. Groupers at Carall Bernat approach divers. They follow you along the wall. They hover at arm's length and watch you with an attention that feels deliberate. In an unprotected area, a grouper this size — and some here are well over a meter — would flee long before you were close enough to see detail. Four decades of protection have produced animals that have never been threatened by a human in their lifetime.

There is a legendary individual that the L'Estartit diving community calls "El Abuelo" — The Grandfather. Forum divers have described this animal as being "como un seat seiscientos" — like a Seat 600, which is a small car. I cannot confirm whether the same individual is still present — groupers are long-lived, so it is possible — but the population is healthy and there is always at least one individual large enough to make you reconsider your sense of scale.

This behaviour is the reserve effect made visible. It is also why Carall Bernat matters beyond just being a good dive — it is a living demonstration of what happens when you stop extracting from a marine ecosystem and let it recover.

What else lives here

The residents

Moray eels (Muraena helena) — in the wall crevices on every dive. 464 logged sightings across the season. Look in any crack or overhang.
Barracuda (Sphyraena sphyraena) — schools circling the rock, particularly at the more exposed sides. 313 logged sightings, peak July through October.
Dentex (Dentex dentex) — large silver predators, usually in pairs at mid-depth. When you see them, hold still — they are more cautious than the groupers.
Octopus (Octopus vulgaris) — under ledges and in holes. If you are patient, you may catch one changing colour in real time.
Nudibranchs — the orange Cratena peregrina on gorgonian fans are the easiest to find. Slow down, look at the fan branches, not just the wall. 80 logged sightings, but that reflects recording habits more than actual abundance.
Spiny lobster (Palinurus elephas) — in deeper crevices, antennae protruding. A good indicator species for reef health.
Scorpionfish (Scorpaena scrofa) — camouflaged against the rock. You will swim past several without seeing them. That is the point.
Sea bream and damselfish — the constant backdrop at every depth.

The seasonal visitors

Eagle rays (Myliobatis aquila) — almost exclusively July and August. 166 sightings in the database, concentrated in those two months. They come from the open water side, so look outward, not at the wall. When the current is running and an eagle ray glides past — that is the dive you remember.
Sunfish (Mola mola) — occasional, unpredictable. More common in June. Not something you can plan for, but something that stops every diver mid-breath when it appears.
Tuna and bonito — pelagic visitors when currents bring open-water species close. You spot them in the blue, usually above you.
Stingrays — 50 sightings logged, mostly in August. Sandy areas near the base.

The walls as habitat

The gorgonian coverage deserves attention beyond aesthetics. Paramuricea clavata is a structurally important species — the fans create habitat for smaller organisms, filter nutrients from the water column, and serve as substrate for nudibranchs and other invertebrates. The health of the gorgonians is a proxy for the health of the entire wall ecosystem.

I will be direct: the shallower gorgonian colonies — above 20 meters — have suffered from warm water events in recent years. Thermal stress causes tissue necrosis in Paramuricea, and recovery is measured in decades, not seasons. The deeper colonies below 25 meters remain in excellent condition. This is not a reason to avoid the site — it is context that enriches what you observe. When you see healthy deep gorgonians alongside stressed shallow colonies, you are seeing climate impact in real time.

Conditions and when to come

Carall Bernat sits at the southern, exposed edge of the archipelago. This shapes everything about the dive.

Currents are the primary variable. Some days, nothing — a relaxed circumnavigation in still water. Other days, the current picks up significantly, particularly with the tramuntana or levant winds. On those days, the circumnavigation becomes demanding: you work against the current, manage your air more carefully, and the ascent requires attention. Carry a signaling buoy — it is not optional at this site.

The good news about current: it brings animals. Eagle rays, tuna, barracuda — the pelagic encounters happen when water is moving. A dive with moderate current is often a better dive for marine life, even though it is harder work.

Visibility ranges from excellent — clear blue water where you can see the opposite side of the pinnacle — to green and reduced. Summer is generally better. But even on lower-visibility days, the marine life is right on the wall, within arm's reach. The dive works regardless.

Temperature follows the area pattern: 14°C in early spring, up to 24°C in August. A 5mm suit is the minimum from June through October. Earlier and later in the season, 7mm.

My recommendation: Come in June or September. Water is warm, marine life is excellent (eagle rays aside — those are a July-August event), visibility is generally good, and you will share the site with fewer groups. July and August are spectacular for species diversity but the daily diver limit means competition for permits.

Practical details

Carall Bernat is a boat dive from L'Estartit, like all Medes dives. The marine reserve permit — 5.15€, handled by your center — and the daily diver limit mean advance booking is essential. In summer, "essential" means "do it weeks ahead, not the day before."

A Medes dive with full equipment rental costs around 80-85€. The permit is normally included. Nitrox supplement is about 3€ per dive — worth it for this site if you plan the deeper route.

If you specifically want Carall Bernat, tell your center when booking. They rotate sites based on conditions and group composition, so expressing your preference matters.

The mandatory ecobriefing before the dive covers conservation rules: maintain 1.5 meters from the walls and bottom, no touching marine life, no feeding. At Carall Bernat, the wall distance rule matters more than at most sites — the gorgonians are fragile, irreplaceable on any human timescale, and a careless fin kick can destroy decades of growth. Pay attention to your buoyancy. If you are not confident in your trim at depth, take the shallower route.

Who should dive this site

In calm conditions, a competent Open Water diver with a guide can enjoy the shallower route. The wall is vertical, the marine life comes to you, and the depth is manageable. It is a genuinely excellent dive at 15 meters.

With current, this becomes an advanced dive. The circumnavigation at 25-30 meters in moving water requires experience: good buoyancy, calm air management, comfort with exposed open-water conditions. Not dangerous with a competent guide, but not a gentle reef drift either.

Be honest with your dive center about your experience. There is no lesser version of Carall Bernat — there is only the version that matches your level on that particular day. I have guided divers with 20 dives and divers with 2,000 dives at this site. Both groups surfaced impressed.

Why this site matters

Carall Bernat is not just a good dive. It is evidence.

Every grouper that approaches you without fear is evidence that marine protection works. Every gorgonian fan older than you are is evidence that some ecosystems, given the chance, can persist across human generations. And every stressed shallow colony is evidence that protection alone is not enough — that what happens to water temperature at a global scale reaches these walls too.

I have been diving this pinnacle for over fifteen years. The grouper population is larger than when I started. The gorgonian walls at depth are holding. The pelagic visitors still come when the currents run. Carall Bernat is a marine reserve working as intended, and every diver who visits it leaves understanding something they did not understand before.

That is why it is the dive I recommend first.