In my post number 2 from Mediterranean (MED II), let me take you bit underwater. Posidonia Oceanica covers a significant percentage of the seafloor in the Aegean, eastern Mediterranean. Very often it hides treasures for maritime archaeologists in the form of isolated finds, such as amphorae or entire merchant cargoes that used to carry these vessels filled with olive oil, wine or other foodstuffs (almonds, salt fish etc.).
Even urchin skeletons are beautiful when found underwater as shown in the photo by my goofy dive-body 