One of the most edenlike spots in the Dalmatian archipelago, Mljet is improbably green and salubriously lush, and is home to an expansive variety of sea creatures that swim (like the cast of Finding Nemo, we like to think) off the island’s coast. Two salted lakes – Veliko and Malo Jezero – lure swimmers into their still waters, and an especially delicious local variety of goats’ cheese lures them into the restaurants afterwards.