Corfu, Ionian, Greece

Hole of Ha

Hole of Ha is a striking vertical chimney swim-through cut through a cliff on the northwest coast of Corfu. Divers enter through an opening at around 6 metres on the cliff face and descend through the chimney for approximately 18 metres of vertical swim, exiting in open water at the cliff base around 24 metres. The interior of the chimney is well-lit by light entering from the entrance and the underwater exit, keeping the dive within the cavern definition for trained intermediate divers. The walls are colonised by red sponges, encrusting bryozoans and the occasional yellow cluster anemone in the dimmer recesses. Outside the chimney the reef wall hosts dusky grouper, Mediterranean moray, common octopus, ornate wrasse, painted comber and scorpionfish, with the sandy floor at 28 metres supporting common stingray and weever fish. Currents are usually weak in the lee of the cliffs, and the Ionian visibility regularly exceeds 25 metres. Boat access is from Kassiopi or Sidari.