Anne's Beach (MM 73.5, on Lower Matecumbe Key, at the southwest end of Islamorada) is really more picnic spot than full-fledged beach, but die-hard tanners still congregate on this lovely but tiny strip of coarse sand that was damaged beyond recognition during the series of storms in 1998. The place has been spruced up a bit, even the bathrooms, which are (for now) clean and useable.

A better choice for real beaching is Sombrero Beach, in Marathon, at the end of Sombrero Beach Road (near MM 50). This wide swath of uncluttered beachfront actually benefited from Hurricane George in 1998, with generous deposits of extra sand and a face-lift courtesy of the Monroe County Tourist Development Council. More than 90 feet of sand is dotted with palms, Australian pines, and royal poincianas, as well as with grills, clean restrooms, and Tiki huts for relaxing in the shade. It's also a popular nesting spot for turtles that lay their eggs at night.

If you're interested in seeing the Keys in their natural, pre-modern development state, you must venture off the highway and take to the water. Two backcountry islands that offer a glimpse of the "real" Keys are Indian Key and Lignumvitae Key. Visitors come here to relax and enjoy the islands' colorful birds and lush hammocks (elevated pieces of land above a marsh).

Named for the lignum vitae ("wood of life") trees found there, Lignumvitae Key supports a virgin tropical forest, the kind that once thrived on most of the Upper Keys. Over the years, human settlers imported "exotic" plants and animals to the Keys, irrevocably changing the botanical makeup of many backcountry islands and threatening much of the indigenous wildlife. Over the past 25 years, however, the Florida Department of Natural Resources has successfully removed most of the exotic vegetation from this key, leaving the 280-acre site much as it existed in the 18th century. The island also holds the Matheson House, a historic structure built in 1919 that has survived numerous hurricanes. You can go inside, but it's interesting only if you appreciate the coral rock of which the house is made. It's now a museum dedicated to the history, nature, and topography of the area. More interesting are the Botanical Gardens, which surround the house and are a state preserve. Lignumvitae Key has a visitor center at MM 88.5 (tel. 305/664-2540).

Indian Key, a much smaller island on the Atlantic side of Islamorada, was occupied by Native Americans for thousands of years before European settlers arrived. The 10-acre historic site was also the original seat of Dade County before the Civil War. Interestingly, from an archaeological standpoint, you can see the ruins of the previous settlement and tour the lush grounds on well-marked trails (off Indian Key Fill, Overseas Hwy., MM 79). For more information on Indian Key, call the Florida Park Service (tel. 305/664-4815) or check out www.abfla.com/parks/indiankey/indiankey.html.

If you want to see both islands, plan to spend at least half a day. You can rent your own powerboat from Robbie's Rent-A-Boat, U.S. 1 at MM 77.5 (on the bay side), on Islamorada. It's then a $1 admission fee to each island, which includes an informative hour-long guided tour by park rangers. This is a good option if you're a confident boater. I also recommend Robbie's ferry service. A visit to Lignumvitae Key costs $20 for adults and $15 for kids 12 and under, which includes the $1 park admission. For a ride to Indian Key, take the 2 1/2-hour Florida Bay Eco-Nature Tour which costs $35 for adults and $20 for children 12 and under, The ferry is a more economical, easier way to enjoy the beauty of the islands when you aren't negotiating the shallow reefs along the way. The runabouts, which carry up to six people, depart from Robbie's Pier Thursday through Monday at 10am and 2pm for Lignumvitae Key. In high season, you may need to book 2 days before departure. Robbie's also does eco-tours, 2-hour trips through passages among the sea-grass beds that rim the many protected shallow bays. You'll get to cruise among the hundreds of small, uninhabited mangrove and hardwood hammock islands, which host an amazing variety of wildlife and create the island network of the Florida Bay. Call tel. 305/664-4815 for information from the park service; or call tel. 305/664-9814, or visit www.robbies.com for Robbie's.

Watersports from A to Z

There are literally hundreds of outfitters in the Keys who will arrange all kinds of water activities, from cave dives to parasailing. If those recommended below are booked up or unreachable, ask the local chamber of commerce for a list of qualified members.

Boating -- In addition to the rental shops in the state parks, you'll find dozens of outfitters along U.S. 1 offering a range of runabouts and skiffs for boaters of any experience level. Captain Pip's, U.S. 1 at MM 47.5, Marathon (tel. 800/707-1692 or 305/743-4403; www.captainpips.com), charges $145 to $300 per day. Overnight accommodations are available and include a free boat rental: 2-night minimum $250 to $450 in season and $225 to $415 off-season; weekly $1,185 to $2,595. Rooms are Key West comfortable and charming, with ceiling fans, tile floors, and pine paneling. But the best part is that every room comes with an 18- to 21-foot boat for your use during your stay. Robbie's Rent-a-Boat, U.S. 1 at MM 77.5, Islamorada (tel. 305/664-9814; www.robbies.com), rents 18- to 26-foot motorboats with engines ranging from 60 to 130 horsepower. Boat rentals are $135 to $185 for a half-day and $185 to $235 for a full day.

Canoeing & Kayaking -- I can think of no better way to explore the uninhabited backcountry on the Gulf side of the Keys than by kayak or canoe, as you can reach places that big boats just can't get to because of their large draft. Manatees will sometimes cuddle up to the boats, thinking them to be another friendly species.

Many area hotels rent kayaks and canoes to guests, as do the outfitters listed here. Florida Bay Outfitters, U.S. 1 at MM 104, Key Largo (tel. 305/451-3018; www.kayakfloridakeys.com), rents canoes and sea kayaks for use in and around John Pennekamp Coral Reef State Park for $35 to $75 for a half-day, $45 to $90 for a full day. Florida Keys Kayak and Sail, U.S. 1 at MM 75.5, Islamorada (tel. 305/664-4878; www.robbies.com), at Robbie's Pier, offers backcountry tours, botanical-preserve tours of Lignumvitae Key, historic-site tours of Indian Key, and sunset tours through the mangrove tunnels and saltwater flats. Tour rates are from $39 to $49; rental rates range from $15 per hour to $45 per day for a single kayak, and $20 per hour to $60 per day for a double kayak. Reflections Nature Tours (tel. 305/872-4668; www.floridakeyskayaktours.com) is a small mobile company that specializes in kayak tours through the Lower Keys. Guided kayak excursions cost $50 per person for a 3-hour tour, $40 per person for a 2-hour full-moon tour. The 3-hour custom tours start at $125 for one person and $195 for two people. All tours are by appointment only. Kayak rentals are $45 for single kayak all day and $60 for full-day tandem. Nature lovers can slip through the silent backcountry waters off Key West and the Lower Keys in a kayak, discovering the flora and fauna that make up the unique Keys ecosystem, on Blue Planet Kayak Tours' (tel. 305/294-8087; www.blue-planet-kayak.com) starlight tour. All excursions are led by an environmental scientist. The starlight tours last between 2 1/2 and 3 hours. No previous kayaking experience is necessary. Cost for the guided kayak adventure is $50 per person.

Diving & Snorkeling -- Just 6 miles off Key Largo is a U.S. Navy Landing Ship Dock, the latest artificial wreck site to hit the Keys -- or, rather, to be submerged 130 feet below the Keys.

The Florida Keys Dive Center, U.S. 1 at MM 90.5, Tavernier (tel. 305/852-4599; www.floridakeysdivectr.com), takes snorkelers and divers to the reefs of John Pennekamp Coral Reef State Park and environs every day. PADI (Professional Association of Diving Instructors) training courses are available for the uninitiated. While some people have complained that employees are rude here, others disagree; I suggest you decide for yourself. Tours leave at 8am and 12:30pm; the cost is $35 per person to snorkel (plus $10 rental fee for mask, snorkel, and fins), and $50 per person to dive (plus an extra $24 if you need to rent all the gear).

At Hall's Dive Center & Career Institute, U.S. 1 at MM 48.5, Marathon (tel. 305/743-5929; www.hallsdiving.com), snorkelers and divers can dive at Looe Key, Sombrero Reef, Delta Shoal, Content Key, or Coffins Patch. Tours are scheduled daily at 9am and 1pm. You'll spend 1 hour at each of two sites per tour. It's $40 per person to snorkel (gear included), $35 for children, and $55 to $65 per person to dive (tanks $7.50-$15 each).

Fishing -- Robbie's Partyboats & Charters, U.S. 1 at MM 77.5, Islamorada (tel. 305/664-8070 or 664-8498; www.robbies.com), located at Robbie's Marina on Lower Matecumbe Key, offers day and night deep-sea and reef-fishing trips aboard a 65-foot party boat. Big-game fishing charters are also available, and "splits" are arranged for solo fishers. Party-boat fishing costs about $35 for a half-day morning tour ($3 for rod and reel rental); it's $20 extra if you want to go back out on an afternoon tour. Charters run about $700 for a half-day, $900 for a full day; splits begin at $120 per person. Phone for information and reservations.

Bud n' Mary's Fishing Marina, U.S. 1 at MM 79.8, Islamorada (tel. 800/742-7945 or 305/664-2461; www.budnmarys.com), one of the largest marinas between Miami and Key West, is packed with sailors offering backcountry fishing charters. This is the place to go if you want to stalk tarpon, bonefish, and snapper. If the seas are not too rough, deep-sea and coral fishing trips can also be arranged. Charters cost $375 for a half-day, $550 for a full day; splits begin at $75 per person.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.