You only need that permit if you are a charter or headboat.
Here is the 'reminder' from NMFS:
Reminder for Charter/Headboat owners and operators
National Marine Fisheries Service (NMFS) wants to remind fishermen there are several federal regulations regarding fishing for dolphin and wahoo in federal waters of the Atlantic Ocean (Maine through the east coast of Florida). Summary of requirements *Owners and operators of charter vessels, and headboats are required to have a federal vessel permit to fish for or possess dolphin and wahoo in the Atlantic Ocean. *The vessel operator must have an operator card on board the vessel along with one other form of personal identification that includes a picture (driver license, passport, etc.). *How to get a permit or operator card* If you are the owner of a vessel needing a vessel permit and operator card to fish for dolphin and wahoo, please contact the Permits Branch at the address listed below: NOAA Fisheries Service Southeast Regional Office Permits Branch 263 13th Avenue South St. Petersburg, Florida 33701 Phone: 727-824-5326; FAX: 727-551-5747 For a copy of the offical notice, visit the library