Makronissos Seal cave
Location: Kea-Kythnos, South Aegean, Greece
Also known as: East Makronissos Cavern, Makronisi Cavern, Makronissos Cave, Makronissos Seal Grotto, Σπηλιά φώκιας Μακρόνησος, Σπηλιά Φώκιας Μακρονήσου
Dive Site Specs
- Max depth:
- 30m
- Difficulty:
- Advanced Open Water
- Entry type:
- Boat Dive
- Coordinates:
- 37.672348, 24.121454 (Directions on Google Maps)
- Rating:
- 3.5/5 (2 reviews)
- Tags:
- Boat Dive, Marine Life, Cave, Deep
Overview
Located on the east side of Makronissos, this site features a cave at around 18 meters depth. It is known for clear waters and the potential to encounter Monachus-Monachus seals.
Access: Makronissos Seal cave is accessed by dive boat departing from local harbors in Attica. Dive boats anchor or secure to mooring lines above the site.
Marine life: Documented marine species observed at Makronissos Seal cave include Mediterranean moray eels (Muraena helena), dusky groupers (Epinephelus marginatus), greater amberjacks (Seriola dumerili), Mediterranean monk seals (Monachus monachus).
Safety: Dives should be planned in accordance with local marine weather and surface swell conditions. Deploy a surface marker buoy when ascending in open water away from coastal rock formations.
Nearby Dive Sites
- Makronissos Canyon (0.1 km away)
- Makronissos, South East (2.8 km away)
- Antonios Reef (4.9 km away)
- Attiki - Makronissos - Portugal bow (6.2 km away)
- S/S Portugal Wreck (6.3 km away)
- Piper (9.1 km away)
Recent Dives
- Makronissos Seal cave - 2026/10/18 (by fotis_karidas · Oct 18, 2026 · Depth: 31.9m · Duration: 49 min)
Associated Diving Centers
- Planet Blue Dive Center (Lavreotiki, Greece)