Blockhaus des Gaillouneys

★★★★☆ (14)

The Gaillouneys blockhouses are an atypical diving site located south of the Dune du Pilat, in the southern pass of the Bay of Arcachon. These are former German fortifications of the Atlantic Wall, built during the Second World War to defend the entrance to the basin.

The site combines military archaeology and biodiversity. The concrete surfaces are colonized by multicolored anemones and sponges, transforming the bunkers into living reefs.

Dive Activity

Potential Wildlife Sightings

Wildlife Sightings are Based on User Generated Content

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species: 300

Octopus

2 Sightings
J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
1
S
1
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species: 200

Moray Eel

1 Sightings
J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
1
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species: 80

Stingrays

1 Sightings
J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
1
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species: 190

Conger Eel

1 Sightings
J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
0
S
1
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species: 120

Flounder

1 Sightings
J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
0
S
1
O
0
N
0
D
0

Dive Centers Catering This Dive Site

Dive Sites Nearby