Video: Spanish police film Gibraltar reef 'inspection' Spain's Guardia Civil police released a video of its divers inspecting and measuring one of 70 concrete blocks dropped by Gibraltar into the surrounding sea to create a hotly disputed reef. The Gibraltar Governor, Sir Adrian Johns said the police action was a "blatant attempt" to exercise jurisdiction in waters over which Gibraltar claims sovereignty. Gibraltar dropped the concrete blocks into the sea last month to create an artificial reef, saying it wanted to protect marine life.