Grotta del Nereo

Capo Caccia, Italy

Depth

30m

Visibility

8m - 23m

Entry

Boat

Experience Level

Advanced

Grotta del Nereo

Capo Caccia, Italy

Depth

30m

Visibility

8m - 23m

Entry

Boat

Experience Level

Advanced

About Grotta del Nereo

The Nereo Cave is a huge underwater sea-cave situated on the north-west of Sardinia in the Coral riviera of Alghero, Italy. The name was given by the discovers in honour of the mythological figure Nereus the Titan Old Man of the Sea, father of the Nereids. The site is under the high limestone cliffs of Capo Caccia, 100 metres north of the famous Neptune's Grotto. The cave is considered the biggest marine cave in all the Med Sea. With the many entrances, arches and tunnels, it is possible to make dives from 0 to 35 m, through long and large tunnels, air chambers and different ways. The walls are covered with red coral and yellow leptosamnia. With the other cape of Punta Giglio and the Porto Conte Bay, the cave if part of a Marine reserve set up in 2003. Its flora and fauna are typically Mediterranean including groupers, lobsters, congers and moray eels, and thriving crustation life. Writed by Abyssadventurer for wikipedia http://en.wikipedia.org/wiki/Nereo_Cave video http://www.youtube.com/watch?v=BM_oH3f_Xc8&feature=channel_page more source at http://www.adventurediving.it/diving/luoimm/nereo.htm

Grotta del Nereo Dive Info

Terrain & Features

Rock, Cave

Entry Type

Boat

Max Depth

30m

Visibility Range

8m – 23m

Experience Level

Advanced

Best Gas Mix

21% – 35%

O₂

CNS Load (25 min)

16% at 28m / 36%

O₂

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Marine Life

Conger Eel
Groupers
Lobsters
Morey Eel
Red Coral
Sponges
Various

Weather Conditions

Water Temperature ℃

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Location

Dive Site Hazards

Bubble Trapping Under Overhangs — Rock overhangs can trap exhaled bubbles, reducing visibility and causing disorientation.
Reflected Surge Patterns — Surge reflecting off rock faces can create irregular and unpredictable water movement.
Current Funnel Effect — Narrow gaps between rocks can accelerate water flow unexpectedly.

Remote Silt Disturbance — Silt can be disturbed metres away from the source.

Rapid Stress Escalation — Stress can increase sharply when visibility or navigation degrades.

High Cognitive Load Navigation — Complex passages increase mental workload even on a line.

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