GRASM - CEFERAS Centre de plongée - Medes Islands
The Medes Islands have some surprisingly punchy diving, and GRASM, also known as CEFERAS, gives you a real taste of what makes this protected area special. We love how the topography here really makes you feel like you're exploring; it’s not just a flat reef. You'll find yourself navigating through some dramatic rock formations, often with schools of barracuda circling overhead, their silver scales catching the light in mesmerising flashes. Our favourite time to dive GRASM is early morning, before the boat traffic really picks up, when the light penetrates the water at an angle that just highlights the texture of the rock walls. Keep an eye out for the smaller stuff too, especially the butterfly blennies darting in and out of crevices. We’ve spotted seahorses here a few times, tucked away in the seagrass, so go slow and really look. The current can be noticeable, particularly around the corners, so it’s best for divers who are comfortable with drift and good buoyancy. If you’re a fan of Mediterranean wall diving with a bit of a thrill, this site is a solid pick.
- Location
- Medes Islands, Spain, Mediterranean & Europe
- Coordinates
- 43.295020, 5.355713
- Maximum Depth
- 15-35m
Best Time to Dive in Medes Islands
The warmest water temperatures in Medes Islands occur in August, averaging 23.1°C. The coolest conditions are in February at 13.3°C.
Monthly Water Temperatures
- January: 14.1°C
- February: 13.3°C
- March: 13.5°C
- April: 14.4°C
- May: 16.8°C
- June: 20.5°C
- July: 22.7°C
- August: 23.1°C
- September: 21.6°C
- October: 19.4°C
- November: 17.3°C
- December: 15.0°C
Nearby Dive Sites in Medes Islands
- Abyss Garden (wreck)
- Aiguablava
- Aigua Xelida - 10-30m (reef)
- Amphores du frioul
- Andromède
- ANGELA - 8m (wreck)
- Arche du plannier - 10-30m (cave)
- Arroyo
- Atoll Plongée (reef)
- AUDIERNE - 16m (wreck)
- Badia de Tamariu - 5-25m (reef)
- Barda de Fitor (wall)
- Barda de l'Illa Negra (wall)
- Barda de Pere el Flaquer (wall)
- BARTOLO - 28m (wreck)
Nearest Dive Centres to GRASM - CEFERAS Centre de plongée
Marine Life in Medes Islands
Home to 78 recorded species including 56 reef fish, 8 sharks & rays, 5 octopus & squid, 4 whales & dolphins, 2 crabs & lobsters, 1 seagrass & algae.
Notable Species
- hake (Merluccius merluccius) - Reef Fish
- Moonfish (Mola mola) - Reef Fish
- Capelin (Trisopterus capelanus) - Reef Fish
- grey gurnard (Eutrigla gurnardus) - Reef Fish
- Mediterranean tapeweed (Posidonia oceanica) - Seagrass & Algae
- Black-bellied angler (Lophius budegassa) - Reef Fish
- Atlantic Spotted Flounder (Citharus linguatula) - Reef Fish
- dogfish (Scyliorhinus canicula) - Sharks & Rays
- Thornback skate (Raja clavata) - Sharks & Rays
- Mullet (Mullus barbatus) - Reef Fish
- Pollock (Trachurus trachurus) - Reef Fish
- lesser argentine (Argentina sphyraena) - Reef Fish
- conger (Conger conger) - Reef Fish
- Blue-white Dolphin (Stenella coeruleoalba) - Whales & Dolphins
- blue whiting (Micromesistius poutassou) - Reef Fish
- Red Band-fish (Cepola macrophthalma) - Reef Fish
- Gurnard (Trigla lyra) - Reef Fish
- Soldier (Chelidonichthys cuculus) - Reef Fish
- Jac (Helicolenus dactylopterus) - Reef Fish
- Norway Lobster (Nephrops norvegicus) - Crabs & Lobsters
Recommended Packing List for GRASM - CEFERAS Centre de plongée
Based on average water temperature of 17.6°C, currents 14 cm/s.
- Wetsuit (5-7mm) - recommended for 18°C water
- Hood & Gloves (3-5mm) - helps retain warmth
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories