Aquarios - Bornholm

Aquarios on Bornholm is a cracker, but you need to manage your expectations a bit. This isn't your flashy tropical reef. Instead, we love it for its quiet, unassuming charm and the sheer abundance of small, fascinating critters that hide in plain sight. Drop in and you’re immediately enveloped by dense eelgrass meadows, swaying gently with the Baltic’s subtle push and pull. It feels like swimming through an underwater prairie. We’ve spent hours here just watching common shore crabs scuttling amongst the blades, or spotting the incredible camouflage of a fluke, almost invisible against the sandy patches. Broadnosed pipefish are a regular sight, hanging motionless, blending in perfectly. The real stars though, are the bivalves – we’re talking common cockles and blue mussels galore, a testament to the health of this ecosystem. Visibility can swing a bit with the weather, so pick a calm day. If you’re a macro lover or just want a really peaceful dive away from the crowds, Aquarios is our pick. It’s perfect for those meditative dives where you slow down and really observe the smaller stuff.

Location
Bornholm, Denmark, Mediterranean & Europe
Coordinates
55.712530, 12.580250

Marine Protected Area: W

Best Time to Dive in Bornholm

The warmest water temperatures in Bornholm occur in January, averaging 3.3°C. The coolest conditions are in December at 3.3°C.

Monthly Water Temperatures

  • January: 3.3°C (air: 3.1°C)
  • February: 3.3°C (air: 3.2°C)
  • March: 3.3°C (air: 3.9°C)
  • April: 3.3°C (air: 6.0°C)
  • May: 3.3°C (air: 10.9°C)
  • June: 3.3°C (air: 16.1°C)
  • July: 3.3°C (air: 17.4°C)
  • August: 3.3°C (air: 18.0°C)
  • September: 3.3°C (air: 15.7°C)
  • October: 3.3°C (air: 11.5°C)
  • November: 3.3°C (air: 7.1°C)
  • December: 3.3°C (air: 3.5°C)

Nearby Dive Sites in Bornholm

Nearest Dive Centres to Aquarios

Marine Life in Bornholm

Home to 67 recorded species including 43 reef fish, 7 clams & mussels, 5 sea snails & nudibranchs, 4 crabs & lobsters, 2 starfish, 2 other.

Notable Species

Recommended Packing List for Aquarios

Based on average water temperature of 3.3°C.

  • Drysuit - water at 3°C demands a drysuit with thermal undergarments
  • Hood & Gloves (7mm+) - critical to prevent heat loss
  • 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