The park preserves one of the most undisturbed stretches of Atlantic barrier island habitat in southeastern Florida.
The island is designated as a sentinel site for sea turtle monitoring due to high nesting density.
The park's Nature Center features a 1,500-gallon aquarium showcasing local marine life.
The estuary at this site acts as a critical nursery area for various fish species and crustaceans.
The park is home to several state-listed endangered or threatened plant species found in the maritime hammock.
The limestone rock reef located just offshore is accessible for snorkeling during low tide.
The pedestrian bridge offers a high-vantage point for spotting manatees and rays in the water below.
The park was established in 1978 following a donation of land from the MacArthur Foundation.
John D. MacArthur Beach State Park is a protected barrier island ecosystem located on the Atlantic coast of North Palm Beach, Florida. The park features nearly two miles of beach accessible by a pedestrian bridge spanning the Intracoastal Waterway. It serves as a significant nesting ground for loggerhead, green, and leatherback sea turtles. The property includes a maritime hammock ecosystem, which is one of the last remaining examples of this habitat in the region. Visitors can explore the estuary via kayak or canoe to view mangroves and seagrass beds. A nature center on-site provides educational exhibits regarding the local flora and fauna. The park encompasses both the coastal dunes and the rocky outcroppings of the Anastasia Limestone formation. Swimming, snorkeling, and shelling are primary recreational activities along the shoreline.
The mid-point of the elevated pedestrian bridge looking north toward the dunes.
Bring water shoes for the rocky reef area near the shoreline.
Visit during low tide to maximize the amount of exposed beach for walking and shelling.
Utilize the free park tram service to cross the long pedestrian bridge if you are carrying beach gear.
Attempting to walk across the water or sandbars during high tide, as currents can be strong.
Do not touch or disturb sea turtle nests; carry out all trash; stay on marked trails to protect dune vegetation.
