Think the Florida Keys are just about sunshine and cocktails by the water? Think again. These amazing islands are a living, breathing playground for some of the most fascinating wildlife in the U.S.

What Animals Live In The Florida Keys?

From Key deer and the Atlantic bottlenose dolphin to sea turtles, queen conch, and over 6,000 species protected by the National Marine Sanctuary, the Florida Keys are a hotspot for diverse wildlife.

Are There Sharks Around The Florida Keys?

Yes, nurse sharks spend their time in seagrasses, and lemon sharks, blacktips, and an occasional hammerhead patrol these waters. Most are shy and avoid humans, but they keep the reef ecosystem healthy and balanced.

What Predators Are In Key West?

You’ll find ospreys, hawks, and the occasional crocodile in the mangroves. In the water? Sharks and barracudas help to keep the food chain in check.

From close encounters with sea turtles and bottlenose dolphins to birdwatching and underwater adventures with tropical fish, here are nine unforgettable ways to meet the wild side of the Keys:

1) Explore The Florida Keys Wildlife By Boat

Start your wildlife adventure with a splash—literally. Here at Key West Boat Trips, we offer unforgettable excursions that showcase the natural beauty and biodiversity of the Florida Keys. From mangrove mazes to reef-filled retreats, these tours are your ticket to the untamed beauty of the Keys.

• Mud Key Mangrove Safari –  Glide through the mangrove areas surrounded by lush mangroves. Spot green herons, sea turtles, and tropical fish in the shallows. This tour offers a close-up look at the natural habitats that make the Florida Keys so unique.
• Boca Grande Island Time & Snorkeling Tour – Relax on a remote island and snorkel among vibrant coral reefs. Encounter bottlenose dolphins and schools of colorful reef fish. It’s the perfect blend of tropical serenity and underwater exploration.

These tours fill up fast – book your tour with Key West Boat Trips early to secure your spot and meet the wild side of our tropical paradise.

2) The Lower Keys Marsh Rabbit – Tiny, Rare, And Endangered

Found only in the Lower Florida Keys, the Lower Keys marsh rabbit is one of the rarest mammals in the U.S.—and one of the most endangered. This shy, nocturnal rabbit prefers thick mangrove and estuarine areas, where it feeds on native plants and hides from predators.

Its small size, dark fur, and secretive habits make it tough to spot. However, conservation efforts are helping protect its fragile population.

• Status – Federally listed as an endangered species under the Endangered Species Act
• Habitat – Coastal wetlands, salt marshes, and natural habitats near Big Pine Key
• Threats – Habitat loss, road traffic, invasive species, and stray cats
• Name – It’s named after Hugh Hefner, who helped fund early conservation efforts.

Pro Tip: When trying to spot the elusive Lower Keys marsh rabbit, visit during dawn or dusk when they are most active. Bringing binoculars can enhance your chances of observing these shy creatures without intruding on their natural behavior.

3) Sea Turtles – Seven Species, One Ocean

The Florida Keys are home to seven species of marine turtles, making it one of the most important nesting and foraging regions in the U.S. From the massive leatherback to the colorful hawksbill, each species plays a vital role in the health of the ocean.

Green sea turtles and loggerheads are the most commonly spotted, often gliding through seagrass beds or resting near coral reefs. These gentle grazers help maintain balance in the ecosystem by trimming seagrass and controlling jellyfish populations.

Many of these sea turtle species are considered threatened or endangered and are protected under the Endangered Species Act. Conservation zones, such as the marine sanctuaries and parks, offer safe havens for nesting and feeding.

Fun Fact: Sea turtles have been swimming in Earth’s oceans for over 100 million years—long before the Florida Keys became a tropical paradise.

4) National Key Deer Refuge – Tiny Deer, Big Impact

Located in Big Pine Key, the National Key Deer Refuge protects one of the most beloved and endangered species in the Florida Keys—the Key deer. These miniature white-tailed deer stand just over two feet tall at the shoulder, making them the smallest of their kind in North America.

The refuge spans more than 8,500 acres of natural habitats, including pine rocklands, freshwater wetlands, and mangrove and estuarine areas. Visitors often spot Key deer near the Blue Hole, a freshwater quarry that attracts a lot of wildlife in the Florida Keys.

Good To Know: Beyond the Key deer, the refuge is home to over 20 endangered and threatened plant species, making it a vital sanctuary. Quiet trails and scenic overlooks offer a peaceful way to explore this protected landscape.

5) Sea Urchins – The Spiky Guardians Of The Florida Keys

Spiny, ancient, and surprisingly vital— sea urchins are the unsung heroes among the Florida Keys marine life. These prickly creatures belong to the echinoderm family, sharing lineage with sea stars, sand dollars, and sea cucumbers. With over 900 species worldwide, several—including the long-spined sea urchin and rock boring urchin—call the Keys home.

Sea urchins feed primarily on algae, scraping the rocks and coral using a specialized mouth structure called Aristotle’s lantern. By keeping algae in check, they help protect the health of coral reefs and seagrass beds, making them essential for maintaining balance in the underwater world.

Despite their tough exterior, urchins have natural predators. Triggerfish, wrasses, lobsters, and even sea otters are known to snack on them, helping regulate populations and prevent overgrazing.

Pro Tip: Want to spot urchins while snorkeling? Look closely around rocky outcrops and coral heads in shallow waters or in protected reef zones. Their spines often peek out from crevices, so move slowly and watch your step.

6) Florida Keys National Marine Sanctuary – A Living Reef

Stretching across 2,900 square nautical miles—from Key Largo to the Dry Tortugas—the sanctuary is one of the most biologically diverse marine protected areas in the U.S. It safeguards coral reefs, seagrass beds, mangrove forests, and hundreds of species that call these waters home.

Key Largo is home to some of the sanctuary’s most iconic reef sites, including Molasses Reef, French Reef, and the submerged Christ of the Deep statue. These areas offer underwater views that are popular with snorkelers and divers.

From Atlantic bottlenose dolphins and nurse sharks to queen conch and sea cucumbers, this sanctuary is a haven for South Florida marine life. It also protects historic shipwrecks and cultural sites, making it a treasure trove for wildlife enthusiasts and history buffs.

7) Discover Wildlife Wonders At Curry Hammock State Park

Located on Fat Deer Key, just north of Marathon, Curry Hammock State Park protects the largest undeveloped stretch of land in the Middle Keys. This quiet sanctuary offers a rare glimpse into untouched Florida Keys ecosystems, from mangrove swamps to rockland hammocks.

The park is a hotspot for birdwatchers, especially during fall migration. Each year, thousands of peregrine falcons, ospreys, and eagles pass through, with record-breaking counts logged at the Florida Keys Hawkwatch. Wading birds, shorebirds, and songbirds also frequent the area, making it a year-round haven for avian life.

Beyond birds, visitors may spot crabs, lizards, raccoons, and even the occasional snake along shaded trails. The coastal waters attract manatees, stingrays, and juvenile sea turtles, especially on calm days when paddlers glide through the shallows.

Pro Tip: For the best wildlife viewing, visit early in the morning or during fall migration. The Blue Trail offers a peaceful walk through native habitats, and the kayak launch gives access to quiet coves teeming with marine life.

8) Key West National Wildlife Refuge – Remote And Wild

Established in 1908 by President Theodore Roosevelt, the Key West National Wildlife Refuge is one of the oldest protected areas in the United States. Located west of Key West, this remote refuge spans over 375 square miles of open water. It includes the Marquesas Keys and 13 other uninhabited islands.

The refuge was established to protect the nesting grounds of colonial birds and other native wildlife. Today, it’s a sanctuary for loggerhead sea turtles, wading birds, and other rare species.  The islands have mangrove forests, seagrass, and sandy beaches—ideal habitats for many Key West animals.

Accessible only by boat, the refuge offers an escape for paddlers, birdwatchers, and nature lovers. Visitors may spot herons, egrets, roseate spoonbills, and even the occasional American crocodile.

Pro Tip: Book a guided tour to explore the refuge responsibly. These tours often include wildlife spotting, snorkeling, and insights into the fragile ecosystems—all without disturbing the natural habitat.

9) Meet The Majestic Sea Cows Of The Florida Keys

Gentle, slow-moving, and graceful giants, sea cows are one of the most beloved marine mammals in the Florida Keys. They can weigh up to 1,000 pounds and stretch nearly 10 feet long, yet they move through coastal waters with ease.

The manatees spend their days eating seagrass, surfacing every few minutes to catch their breath. In the Florida Keys, they’re often spotted near marinas, shorelines, and shallow bays, especially during cooler months when they seek warmer waters.

Despite their size, these creatures are vulnerable to boat strikes, habitat loss, and cold stress. Conservation efforts across the Keys—including designated manatee sanctuaries like Cow Key Marina—help protect these gentle giants and educate visitors about their importance.

Pro Tip: For a chance to see these creatures up close, visit areas like parks, Cow Key Channel, or sheltered canals near Key West. Look for their snouts breaking the surface or their tails stirring the water.

Florida Keys Wildlife Adventure With Unforgettable Boat Trips

From bottlenose dolphins and nurse sharks to marsh rabbits and mangrove birds, the Florida Keys are bursting with wildlife. Whether you’re snorkeling in the Upper Keys, paddling through Curry Hammock, or spotting nurse sharks in the shallows, every stop offers a new encounter with nature.

To experience Key West wildlife up close, book a guided tour or a small-group tour with Key West Boat Trips. Our excursions offer access to remote refuges, pristine waters, and the chance to see all the wildlife the Keys have to offer.

Get ready to experience the incredible wildlife of the Florida Keys like never before! Book your adventure today and create unforgettable memories with nature’s most incredible creatures!