Underwater visibility
Situated on the east coast of Lundy Island, Iona II is subject to a range of environmental conditions.
Visibility on this site can vary from 0.5m to 15m but the most typical visibility is 4-5 metres. Factors influencing the visibility onsite include divers disturbing the seabed silt, the algal blooms that are common in April and May and a high degree of suspended sediment from river run off after storms.