Can You Keep a Marlin in Florida? Size Limits, Permits, and Penalties

Yes, you can keep a marlin in Florida, but only if the fish clears a strict minimum length, you hold both a state saltwater fishing license and a federal Highly Migratory Species permit, and you report the catch within 24 hours of returning to shore. Florida also caps you at one billfish per person per day across all species combined, so a single trip produces at most one keeper. Most anglers release.

Minimum Size by Species

Every billfish you keep has to meet a minimum lower jaw fork length, measured as a straight line from the tip of the lower jaw to the fork of the tail. A curved measurement along the body doesn’t count, and a fish that looks big enough boatside can come up short on the dock.1Florida Fish and Wildlife Conservation Commission. Fish Measurement

Any harvested billfish has to be landed whole. No filleting, no gutting at sea. Enforcement officers need to verify the length on an intact fish at the dock.

How Many You Can Keep

Florida sets an aggregate bag limit of one billfish per person per day.4Legal Information Institute. Florida Administrative Code R 68B-33.004 – Recreational Aggregate Bag Limit “Aggregate” means every billfish species counts against the same limit. Land a sailfish and you’re done, blue marlin included. You also can’t possess more than one billfish at any time inside the state.

There’s a federal ceiling layered on top of the daily rule. Recreational landings of blue marlin, white marlin, and roundscale spearfish combined are capped at 250 fish per year nationwide.5Federal Register. Atlantic Highly Migratory Species; Atlantic Billfish Fisheries When NOAA projects the quota is about to be hit, it announces a shift to mandatory catch-and-release for those three species, effective at least 14 days later. In active years that switch can flip before summer ends, so a legal keeper in June may be a release-only fish by August.

Commercial harvest of any billfish is prohibited in Florida waters.4Legal Information Institute. Florida Administrative Code R 68B-33.004 – Recreational Aggregate Bag Limit Tournament fishing is legal, but the recreational rules still apply to every fish brought to the scales.

Permits You Need Before You Fish

Two credentials, both required.

Florida Saltwater Fishing License

A recreational saltwater fishing license costs $17 per year for Florida residents and $47 per year for nonresidents, with shorter-term options for visitors.6Florida Fish and Wildlife Conservation Commission. Recreational Saltwater Licenses and Permits Exemptions exist for anglers under 16 and Florida residents 65 and older, among others; confirm your category with FWC before relying on one.

Federal HMS Angling Permit

Any vessel fishing for or possessing billfish needs a valid Atlantic Highly Migratory Species Angling Permit. It costs $24 per year, attaches to the vessel rather than the angler, and a hard copy must be aboard whenever billfish are being targeted or retained.7NOAA Fisheries. Atlantic Highly Migratory Species Angling Permit The requirement applies in both federal and state waters. For sailfish, federal regulations specifically require every person possessing or taking one within the Atlantic Exclusive Economic Zone to hold or be aboard a vessel with a valid HMS permit.8eCFR. 50 CFR Part 635 Subpart C – Management Measures

Charter and headboat vessels carry a separate HMS Charter/Headboat permit instead of the Angling permit. If you’re booking a trip, the captain should already have the right credential, but it’s reasonable to ask before you leave the dock.

Reporting the Catch Within 24 Hours

Every harvested billfish must be reported to NOAA Fisheries within 24 hours of your return.9NOAA Fisheries. Atlantic Highly Migratory Species Reporting It isn’t optional, and failing to report is a separate violation from any size or bag limit issue. Three ways to do it:

The app is the practical choice if you have cell service offshore, because you can log the fish before you reach the ramp.

If You’re Releasing a Sailfish, It Stays in the Water

This rule catches more anglers than any other. A sailfish you intend to release may not be removed from the water. The restriction applies in federal waters and also in state waters whenever your vessel carries a federal HMS permit.11Florida Fish and Wildlife Conservation Commission. Billfish, Tuna, and Swordfish Since the HMS permit is required to fish for billfish in the first place, the no-removal rule effectively covers every sailfish release in Florida. No lifting it for a photo, no bringing it aboard for a quick measurement. Boatside, in the water, dehook, release.

For released billfish generally, the standard is to handle the fish in a way that gives it the best chance of survival. Dehooking tools, short fight times, and keeping the fish alongside the boat are both best practice and compliance.

Penalties If You Get It Wrong

NOAA Fisheries enforces HMS rules with civil penalties, and the schedule climbs with repeat offenses. Exceeding the bag limit starts at $250 per extra fish for a first offense and $500 per fish for a second, with the over-limit fish seized.12NOAA. National Summary Settlement Schedule Using unauthorized gear carries the same $250 starting point. Failing to report a landing is $250 for a first offense, $500 for a second.

Those are the routine settlement figures. For willful or egregious violations, NOAA has authority under the Magnuson-Stevens Act to assess civil penalties up to $189,427 per violation, and vessel seizure is possible in serious cases.13NOAA. Policy for the Assessment of Civil Administrative Penalties and Permit Sanctions Measuring your fish carefully before you commit to keeping it is a cheap insurance policy.