Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 to 1000 nanometres (10−9 meter) but usually is 1 to 100 nm (the usual definition of nanoscale).
The Mediterranean supports a rich diversity of marine life, which is the focus of conservation efforts. An EU initiative investigated how best to designate and manage these sites for marine conservation.