Floating jet ski dock on a canal, cleaned of marine growth

Hull Cleaning, Dock & Seawall Divers in Key Biscayne, FL

  • 5.0★ on Google · 335 reviews
  • Licensed & insured
  • $2,000,000 liability insurance

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Before: floating jet ski dock with marine growth along the waterline

Key Biscayne is salt water on every side: the Atlantic to the east, Biscayne Bay to the west and Bear Cut to the north, and the Rickenbacker Causeway is the only road in. Boats here sit in clear, warm bay water, and clear water does nothing to stop barnacles from settling on a hull that stays still.

Boating around the village

The village is small, about 1.25 square miles, and its boating is concentrated in a few spots. Key Biscayne Yacht Club on Harbor Drive, founded in 1955, has around 100 slips for boats up to about 60 feet. Hurricane Harbor and the Pines Canal are idle-speed, no-wake zones under county code, and the private docks around Mashta Island sit on that quiet water. Just north of the village, Crandon Park Marina on Crandon Boulevard is the county facility, with wet slips for boats up to 80 feet, fuel, dry storage and a ramp with 212 trailer spaces.

At the south end, No Name Harbor in Bill Baggs Cape Florida State Park is the overnight anchorage, with a free pump-out. Boats that anchor there for a weekend and come home to a Hurricane Harbor dock get the same warm water on both ends of the trip, which is why we put village boats on a 30-day cleaning schedule and ZIP 33149 is on our route every month.

What the water does to a hull here

Bear Cut, the channel between Virginia Key and Key Biscayne, is where bay water and ocean water trade places on every tide, and the seagrass beds west of Virginia Key are where manatees gather. All of that water is fully salt, which means fast barnacle growth on props, shafts and rudders, the metal parts bottom paint can't protect. Inside Hurricane Harbor there is no wake to disturb the growth at all, so the algae band at the waterline is the first thing owners notice.

The village sits low, is in Evacuation Zone A and faces the open Atlantic, so its docks and seawalls take real weather. In 2023 the village floated a uniform 6.5-foot seawall height for bayfront properties; council members opposed it and we have not seen it adopted, so we treat it as a proposal and inspect the wall you have.

What we do in Key Biscayne

  • Barnacle Doctor diver cleaning the underside of a boat hull

    Boat Bottom Cleaning

    We clean boat bottoms on Key Biscayne every 30 days, at Key Biscayne Yacht Club's slips on Harbor Drive, at Crandon Park Marina just north of the village and at the no-wake docks inside Hurricane Harbor.

  • Wooden dock piling cleaned of barnacles, seen from above the water

    Dock & Piling Cleaning

    We clean dock pilings, floating docks and lifts on Key Biscayne without pickaxes or chisels, in the no-wake water of Hurricane Harbor and the Pines Canal and on the bay side around Mashta Island.

  • Diver's hand next to a crack in a concrete seawall during an inspection

    Seawall Inspection & Repair

    A seawall inspection on Key Biscayne is $250 for a home and $350 for a multi-family or commercial property, and it includes the documentation lenders ask for on a waterfront sale in 33149.

Key Biscayne questions we hear

Do you service boats at Key Biscayne Yacht Club and Crandon Park Marina?

Yes, both. At the yacht club the diver works from your slip on Harbor Drive; at Crandon Park Marina we clean boats in the wet slips in place. Every cleaning covers the hull, running gear and waterline and ends with photos and a zinc report.

My boat sits behind my house on Hurricane Harbor. How often does it need cleaning?

Every 30 days with bottom paint, every two weeks without it. Hurricane Harbor is a no-wake zone, so nothing disturbs the growth between trips, and barnacles grab bare gelcoat faster and thicker than paint.

Can you check my dock pilings on the bay side?

Yes. We clean the oysters off without abrasives, with no pickaxes or chisels, so the diver can see the wood or concrete underneath. If a wooden piling is being eaten, it can be wrapped in black UV-stabilized HDPE with 316 stainless nails or sleeved with a Snap Jacket.

Is your service available after a storm?

Yes, we offer 24/7 emergency service. After weather we can dive to check a hull, a dock or a seawall, and we recover items that went off a dock or a boat.

Getting a diver to Key Biscayne

Use the form or call 561-666-3716 and tell us the boat's length, whether it is at the yacht club, Crandon Park Marina or a Hurricane Harbor dock, and whether the hull is painted. A photo of the dock or the wall from above saves the diver a trip to look. The scheduling system tells you which day the diver is coming, and you don't need to be home.

Get a Free Quote in Key Biscayne

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Helpful to include: boat length, marina or dock location, and whether it has bottom paint.

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What boat owners say

  • Excelent Service. The personal are profesional and very nice guys. 10000% Recomended
    Hector ArellanoGoogle review · 8/27/2026
  • They helped me out with an emergency situation with a customer. Where I needed the
    Quintin PerkinsGoogle review · 8/24/2026

    Read the full review on Google

  • I used barnacle doctor to clean the hull of my center console and was very happy with their servi
    Jeremy KatzGoogle review · 8/18/2026

    Read the full review on Google

Boat on Key Biscayne?

Yacht club, county marina or the dock behind your house: one message gets it on the monthly list.