Manatee protection zones around Charlotte Harbor tell boaters where and when to slow to "Slow Speed" or "Idle Speed," and in a few places where not to enter at all. The zones are set by FWC county by county, many apply only in certain seasons, and they become enforceable once signs are posted on the water. Obey every sign along your route, and keep a lookout everywhere else too: manatees do not stay inside the zones.
Who sets the zones
Florida's manatee zones rest on the Florida Manatee Sanctuary Act of 1978, section 379.2431(2), Florida Statutes. FWC writes the zone rules in Chapter 68C-22 of the Florida Administrative Code, organized by county: for example, Rule 68C-22.005 covers Lee County and Rule 68C-22.015 covers Charlotte County and part of DeSoto County. A trip from Punta Gorda to Pine Island crosses both sets of rules.
Local governments can add zones by ordinance, but not in the main marked channel of the Florida Intracoastal Waterway or within 100 feet of it. The U.S. Fish and Wildlife Service has designated some federal manatee protection areas as well. Where several authorities regulate the same water, FWC explains that the most restrictive rule applies and is the one posted. A new FWC rule takes effect after adoption but cannot be enforced until signs are up. Maps for each county are linked from FWC's manatee protection zones page.
How to read the signs
The big words give the basic rule; the small print gives seasons, channel exceptions and what applies the rest of the year. Read the whole sign, and watch for the signs that mark where a zone ends.
| Sign wording | What it requires | Details to watch for |
|---|---|---|
| Slow Speed / Slow Speed Minimum Wake | Boat fully off plane and completely settled in the water | No miles-per-hour figure applies; a boat plowing with its bow up is not at slow speed |
| Idle Speed / Idle Speed No Wake | The lowest speed that still gives steerage and headway | Stricter than slow speed; often used in narrow canals and near refuges |
| No Entry | No vessels may enter | Applies to paddlers too; check whether it is seasonal |
| Motorboats Prohibited | No motorized vessels | Paddlers may usually enter; read the full sign |
| Numeric limit, such as 25 mph | Stay at or below the posted speed | Often paired with a seasonal slow-speed rule on the same sign |
The definitions come from Rule 68C-22.002, Florida Administrative Code, and parallel federal rules. Slow speed and idle speed are not the same thing, and the difference matters to an officer as much as to a manatee.
Why many zones are seasonal
Manatees cannot tolerate long exposure to cold water. FWC notes that water below about 68 degrees Fahrenheit for long periods can cause cold stress, so in winter manatees gather at warm-water sites such as springs, deep canals and power-plant outflows, and travel between them and nearby feeding grounds. Winter refuges and the routes leading to them deserve extra care.
In the warm months, manatees spread across seagrass flats, rivers, creeks and residential canals, grazing and resting in water only a few feet deep. That is why seasonal zones differ from place to place, and why the end of a seasonal restriction does not mean the animals have left. Seagrass is their main food, which ties this page to the guide on seagrass and mangroves.
Habits that prevent collisions
- Wear polarized sunglasses to cut glare and see below the surface.
- Post a lookout in a safe spot in the bow, with an agreed signal to the operator.
- Watch for signs of manatees: a snout breaking the surface, a broad paddle-shaped tail, a smooth circular "footprint" on the water, or a trail of stirred-up mud.
- Stay in marked channels and slow down in shallow water and over grass flats, where manatees feed.
- Give them room. Never chase, surround, touch or feed a manatee, and never give it fresh water from a hose; these acts are prohibited.
Paddlers can drift quietly near manatees, but should not paddle toward them, separate a mother and calf, or block a canal. The paddling guide covers sharing channels with motorboats. Personal watercraft riders face the same zones and should be especially careful in shallow water, where fast turns happen right over feeding animals.
Legal status
The U.S. Fish and Wildlife Service reclassified the West Indian manatee, which includes the Florida manatee, from endangered to threatened under the federal Endangered Species Act in 2017. It remains protected under federal law and under the Florida Manatee Sanctuary Act, so harassing or harming a manatee is illegal regardless of where it happens.
Before you leave the dock
- Look up the county zone maps for every part of your route, including seasonal dates.
- Note shallow flats, winter refuge approaches and narrow canals where you will slow down.
- Clean sunglasses and windshields, and brief passengers on the lookout signal.
- Save FWC's Wildlife Alert page on your phone so you can report quickly.
- Secure fishing line and trash so nothing blows overboard; discarded line entangles manatees as well as birds, as the fishing rules page notes.
If you hit a manatee or find one in trouble
If you strike a manatee, stop as soon as it is safe, note the location and report it right away. Do the same for an injured, dead, orphaned or entangled manatee. Record landmarks, the time and which way the animal moved. Use FWC's Wildlife Alert page, which lists the hotline and other ways to report. Do not try to rescue, tow, untangle or push a manatee yourself; trained responders have the equipment and permits to do it safely.
Frequently Asked Questions
How fast is "Slow Speed"?
There is no fixed number. FWC defines slow speed as the boat being fully off plane and completely settled in the water, so the right throttle setting depends on the hull and load.
Do manatee zones apply to kayaks and paddleboards?
Speed limits are aimed at motorized boats, but "No Entry" zones apply to every vessel, including kayaks and paddleboards. Read the full sign and its seasonal dates before entering.
Should I give a manatee fresh water from a hose?
No. Giving manatees water or food is prohibited because it draws them to docks and boat traffic. Watch from a distance without changing the animal's behavior.
What if a manatee I hit swims away?
Report it anyway, right away, through FWC's Wildlife Alert page. Injuries are not always visible, and the location and direction of travel help responders find the animal.