Sea Date, Lithophaga lithophaga, grows and lives inside the rocks, so it is practically impossible to see and film it unless the rock where it is found is shattered, an obviously illegal practice, prohibited by the regulations of all Mediterranean countries. Consequently, fishing is also prohibited and those who practice it are finally punished with severe and heavy sanctions, unless it is our usual friend the common octopus, Octopus vulgaris, who does it.

During a scuba diving in a seabed of about twenty meters of sand and rock, I found a specimen of Noble Pen Shell, Pinna Nobilis, probably affected by the parasite Haplosporidium Pinnae. ...