The beach in Icmeler is a beautiful sand beach with beautiful water.
Before you lay down at the beach, you will have to pay in order to get a sunchair. This can cost between 2.5 to 20 Turkish Lira per day to use these sun chairs, showers etc.
There are activities you can enjoy along the Icmeler beach, for example: Parasailing, Scuba diving, Snorkeling, Water skies, Banana boat, Water scooter, Beach Volley etc.
So even though you might have gone to Icmeler in order to relax and just lay at the beach, you will have plenty of options if you want to do something else as well.