
Cretaccio Island Wall
Tremiti Islands · Italy
Cretaccio is the smallest and least visited island of the Tremiti group, an uninhabited chalk outcrop whose underwater perimeter is a continuous vertical wall from the surface to 40 metres and beyond. The wall is blanketed in orange and violet sponges, red corals, and enormous gorgonian colonies, and the deep sections regularly produce surprise encounters with large amberjack and sunfish. The solitude here is profound — almost no dive traffic compared to San Domino — and the wall life is correspondingly undisturbed.
Conditions
Depth
5 to 40 m
Advanced depths
Current
Usually still
Can pick up on the edge
Visibility
25 to 35 m
Clearest in the calm season
Water
11 to 27°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 12 | 11 | 12 | 13 | 17 | 21 | 24 | 25 | 23 | 20 | 16 | 13 |
| Vis (m) | 15 | 15 | 15 | 15 | 20 | 20 | 25 | 25 | 25 | 20 | 15 | 15 |
| Current | Moderate | Moderate | Moderate | Moderate | Gentle | Gentle | Still | Still | Gentle | Gentle | Moderate | Moderate |
Your chances of seeing each animal
Common dentex
Last confirmed Jun 20, 2025 · 1 records
Likely
About 6 in 10 dives
Italian Wall Lizard
Last confirmed May 28, 2026 · 8 records
Likely
About 6 in 10 dives
Mediterranean Moray
Last confirmed Apr 21, 2026 · 3 records
Sometimes
About 1 in 3 dives
Salema Porgy
Last confirmed Jul 14, 2024 · 2 records
Rare
Now and then
Red coral
Expected
Known here, not yet in recent logs
Ocean sunfish
Expected
Known here, not yet in recent logs
Greater amberjack
Expected
Known here, not yet in recent logs
Cratena Slug
Expected
Known here, not yet in recent logs
Gear