New and improved access to Caesarea by public transport: train to Caesarea-Pardess Hanna (from either Tel Aviv or Haifa) and bus 80 from there. Check the times of the trains and buses before you go to avoid long waits.

Trains: www.rail.co.il

Buses: www.bus.co.il

Also, there're some cool tours from these guys (we went to Jordan with them - was awesome)

https:/…

The above refers to Abraham tours. They do have interesting things, but it should be noted that many of their 'tours" are transportation only. The above reference transportation gives you 3 hours in Caesarea. Personally, considering you will want to eat lunch in the middle of that ( and there are some nice restaurants available) I would either rent a car or take the train. I think you need more time.

If you do rent a car, there is an interesting art museum to visit.

https:/…Ralli_Museums_Caesarea

I found it by accident one year and while I would't go specifically, if I had a car--I would definitely go. ( not sure how much it cost to go by taxi from National Park)