I think so. If you only want to see sea beach then Dukhan is ok. There are no sharks but there are Channa Fish at Dukhan. Beware of Channa Fish! They are very dangerous, especially during the onset of winter. They generally don't attack humans, but if they are hungry they may eat humans! This happens especially when the Channa grows old and lazy and doesn't want to hunt, then they come near the beach to grab easy prey(the human bathers). If you want to be safe from the Channa eat lots of Garlic and apply Garlic spray on your body because, the only thing that can repulse a Channa is Garlic!
Have a nice swim at Dukhan!
Cya.