Castri Reef Deep

Divesite Image
© OCEANIC Diving Center, 63088 Nikiti
Divesite Image
© OCEANIC Diving Center, 63088 Nikiti

Castri Reef Deep

★★★★★ (62)

One of THE BEST dive sites around Nikiti, Halkidiki! Castri Reef is located at the middle of the Thoroneos Gulf. The reef start from 7 meters depth until 65 meters.

Castri is an old archeological area around Nikiti. The dive site is open for scuba diving 2005. There are nice formations and fantastic marine life.

Dive Activity

Courses and Events

Mares Horizon SCR course May 2026

Mares Horizon SCR course May 2026

Discover the next level of diving with the Rebreather Mares Horizon, an advanced semi-closed rebreather designed for divers seeking longer, quieter, and more efficient dives. This May 2026, we are hosting a professional Mares Horizon Rebreather course for divers who want to expand their skills into the world of rebreather diving. The course combines classroom theory, hands-on workshops, and open-water training dives. You will learn the fundamentals of semi-closed rebreather operation, gas management, buoyancy control, emergency procedures, and proper system maintenance. What you will learn: • How the Mares Horizon Rebreather works • System setup and configuration • Rebreather dive planning • Oxygen and gas mixture management • Emergency and bailout procedures • Care and maintenance Who is this course for: • Certified Advanced Open Water divers or equivalent • Divers interested in technical and extended-range diving • Underwater photographers and explorers Upon successful completion, you will receive an official Mares Horizon Rebreather certification, allowing you to dive this system worldwide. Book your Mares Horizon Rebreather course in May and take your diving to the next level. Dates are from 20 of May to 24 of May

May 20, 2026 +3 More
$2,695.42
€2,300.00

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 approx.: 200

Alamy-WaterFrame
Moray Eel

Moray Eel
2 Sightings
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0
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0
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2
A
0
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0
O
0
N
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0

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

Total number of species approx.: 300

Alamy/Reinhard Dirscherl
Octopus

Octopus
1 Sightings
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0
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0
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0
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0
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0
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0
A
1
S
0
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0
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0
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0

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

Total number of species approx.: 3000

SSI-Peter-Schinck
Nudibranch

Nudibranch
3 Sightings
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0
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0
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0
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0
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0
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0
J
2
A
1
S
0
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0
N
0
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0

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

Total number of species approx.: 2

iStock-stock_colors
Tarpon

Tarpon
1 Sightings
J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
1
S
0
O
0
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0
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0

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

Total number of species approx.: 250

Shutterstock-Henry_and_Laura_Whittaker
Grouper/Basslets

Grouper/Basslets
1 Sightings
J
0
F
0
M
0
A
0
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0
J
0
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0
A
1
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0
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0

Dive Centers Catering This Dive Site

OCEANIC Diving Center - NIKITI

OCEANIC Diving Center - NIKITI

Leoforos Sithonia 97 Str., 63088 Nikiti, Greece
OCEANIC Diving Center - NIKITI

OCEANIC Diving Center - NIKITI

Leoforos Sithonia 97 Str., 63088 Nikiti, Greece

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Erica Gorgonians <span class="text-color-primary text-sm"> (★5.0)</span>

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