You don't need a state fishing licence to fish from the pier as you can simply pay a per-day fee. Spanish and king mackerel, flounder and trout are among the fish you can catch here. If you don't have your own rod you can rent one from the gift shop on the pier.
Lifeguards are on duty in the area north of the pier from mid-May to mid-September and in these summer months the conditions for enjoying the water are excellent. You can then take a break and sunbathe on the quiet beach.
This is permitted and even encouraged in the park and visiting the geocaching website will allow you to find treasures in the area. This is a great activity when hiking and is a superb idea for keeping kids entertained while you explore the area together.