Take the kids on a Dimitrios-Efthimia Fishing Tourism tour. They'll take you out to pull up the fish nets to see what's for lunch. What you catch will be cooked on the boat. Here's how they describe lunch on the boat:
Under the shade of the boat, feeling the sea breeze we enjoy a good lunch made of the fish we caught, fresh organic vegetables from our garden, olive -oil from our olive grove and homemade wine of fine quality made from our organic grape vine.
The kids will have fun seeing the catch when the nets are pulled up. It will also be educational for them to see the different animals.
While lunch is being prepared, jump off the boat and have a swim with the kids. Bring your snorkeling gear.