I'm heading down to Beaufort SC to do some camping next week with the family at Hunting Island. We're really wondering if we're crazy, now that our temps have cooled back down to the more reasonable 70's

I'd like to do some ocean fishing with the kids (a shark would be awesome!), as well as crabbing and whatever else may be available to do as far as catching any ocean critters are involved (shells, seahorses, etc). We've been to the coast before, but it is all fairly new to us. The kids are really geeked about going.
Anybody have any advice as far as any of that goes to maximize our experience? I've done some reading but don't know what I'll be doing.
Thanks, Rick