The Clear things bobbing everywhere are called "water bottles" and you can't eat them.
Pretty much all finned fish can be eaten. Taste varies. Maine Lobsters require a licence. Cheaper to buy them.Crab and Shrimp traps work well enough here in floridah and you can dive for lobster(crayfish).
Last edited by DRFerron; 09-05-2012 at 04:23 PM.
Reason: Freudian typo corrected.