On the water
Cruises and boat trips.
Prices run from €55 to €1600, and half of the 9 priced listings cost €107 or less. Most take 4 hours to 6 hours. The best reviewed with at least 100 reviews is Athens, Nea Makri: Guided Small Group Snorkeling Boat Trip (4.8 from 150 reviews).
For the operators we researched and recommend, see our food tours and cooking classes in Athens, or the experiences overview.