Mike is right. Your keywords should describe everything in your photo. For Lavirinthos (why that name? Is it from the place in Crete?) someone looking for a snail on a rock would never find your picture. At least that one should have Snail and Rock in the description, and I would add Gastropod, Mollusc, Mollusk, together with the country/place it was photographed in - Greece, Greek, Crete, Cretan, Lavirinthos if that is where it was.