The area is one of the most diverse natural environments in the country, and is designated as an international wildlife protection area, as it is home of several rare and protected species. If you are interested in ornithology the many shallow waters around the islands and islets is a treat with thousands of birds and colonies, one of the more notable is the Arctic Tern, which migrates to Antarctica and back (nearly 40,000 km) every year. This is the longest regular migration by any known animal. You also find Shore Crabs, Beach Otters and - rare for Denmark - Seals in the shallow waters and beaches. On dry land, up on the many islands you can find badgers, stoats and several types of deer. While possibly the most exciting animals are found beneath the water: the Harbour Porpoise, Denmark's only resident whale population.

The archipelago trail^{[dead link]} (Danish: Øhavsstien) is a 220-km hiking trail connected by ferries that circles the entire area. Completed in 2008 the trail is well marked with regular signs set on wooden poles. Allow 4–7 days for the whole trail depending on experience and your desired pace, but it is also possible do to day trips along the route. The local tourist offices in Svendborg and Faaborg can arrange baggage forwarding between your chosen camps or accommodations during peak season. Pre-arranged package tours are also available from Travel Heels in Taasinge or Vagabond Tours in Tranekær, in cooperation with the local tourist authority. If you choose to do the trek individually be mindful that substantial part of the trails crosses private property, so be considerate. A comprehensive guidebook with excellent maps is available in Danish only for 150 kr at most tourist offices in the region. Pamphlets with maps, tips and points of interest in English, broken up into 7 parts is available at the tourist offices, and as pdf files on the introductory link, it is sometimes also available at parking lots along the route, but these are only restocked a couple of times throughout the year, so you may be out of luck.

• Vagabond Tours, Bjerrebyvej 6 (Tranekær), ☏ +45 33 33 00 40, info@vagabondtours.dk. 2500-4600 kr. 
• Travel Heels, Vindebyørevej 42 (Taasinge), ☏ +45 88 30 45 20, info@travelheels.dk. With local guide, for women only. 1380-2075. 

Ferry from Marstal on Ærø, 25 minutes, 1 departure^{[dead link]} per day (but ordering additional departures are possible), 70 kr.
Marina: 54º 55,7' N 10º 30,0' E; VHF; 10 berths; Depth:2 m; Speed: 3 knots.

Birkholm^{[dead link]} is only 1 km² and home of a stubborn but loving 8 people, making it one of the least populated islands in the country, how long the island can sustain a full-year population remains to be seen, but permanent life on the island will probably be a thing of the past in a not too distant future.

Nonetheless it is a pretty, but incredibly flat place, with the highest point towering a proud 1.8 meters over the sea! some fine old farm houses which the remaining population does a commendable job trying to maintain, since many of them are now empty and the rest used as vacation home for "Danish foreigners". There are some nice beaches and good fishing once you've toured the island. If you are a hunter, you might be lucky to run into the yearly Pheasant or hare hunts - you can even rest assured your "evil deeds" does some good, as it supports life on the island.

Ferry from Svendborg, 1 hour, once or twice daily, 85 kr
Marina: 54º 58,0' N 10º 29,6' E; VHF: 16,13,12 & 6; 20 berths at 70 kr; Depth: 1.9 m; Speed:3 knots.

Hjortø means "deer island" in Danish, but as there have never been deer living here, it is more likely to refer to a name. The island is only 0.9 km² and 12 people live on the island, though they have neither a shop, church or anywhere to eat but home, and although there is room for a single car on the ferry, the island is car free. Like Birkholm the island is incredibly flat, and consequently it is protected by dikes, which has failed during storms several times during storms over the years. Outside the dikes you'll find meadows with a rich bird life reaching all the way to coast, which are mostly rocky, but there are some beaches with sand, mostly at Hjortø hale on the eastern part of the island - around the old mill is a good spot, if the tide is low, you can walk across to several small islets surrounding the island on the sandbanks. Owing to a fire set on by lightning, many of the old houses burned down, and the remaining homes have replaced the picturesque thatched roofs with more practical and fire resistant tiles.

Ferry from Svendborg (continues to Drejø), 30 minutes, 4-5 times daily, 85 DKK
Marina: 55º 00,7' N 10º 28,5' E; VHF: 16,13,12 & 6 ; 50 berths at 100 kr; Depth: 2.5 m; Speed: 4 knots.

Skarø is 2 km² and located at the exit of the pretty Svenborg sound, because of the proximity to the main land it gets many one-day visitors, and since the ferry ride is so short it allows for commuting, the island has like Strynø, managed to halt the depopulation and gained new blood in the last few years, so that 36 people live permanently on the island now, most of them in the nice village build up around a village pond.

The island is like most of the islands very flat, but the tallest point towers an impressive 8 m over the island sea, and has fittingly been named Vesterbjerg - the "Western mountain", it has some good views and a small chapel dating back to around 1900, which includes a memorial for the soldiers of a downed British RAF bomber from World War II. The coast is mainly rocky but still invites for a good swim, particularly on the west coast or on the sand reef to the north. On some of the grassland, you can see Scottish Highland cattle. Local resident Preben Sørensen conducts casual guided tours during the summer, where he tells about life on a Danish island (phone +45 22 56 31 99).

Ferry from Svendborg (continues to Skarø), 55 minutes, 4-5 times daily, 85 DKK
Marina: 54º 55,5' N 10º 25,3' E; VHF: 16,13,12 & 6; 15 berths at 50 kr; Depth: 1.2 m; Speed: no planing.

Drejø is at a staggering 5 km² one of the larger islands, and it has around 70 inhabitants, due to the long sailing times it is also in real threat of island death, with many of the houses used as vacation homes. But the ferry, which arrives on the western part of the island, also takes you to the border between the shallow waters - on the southern part of the island, which is mainly rocky, but have a few beaches, and the more open and deeper waters to north, where there is good fishing to be had. Only half the island is farmland, the rest is made of grassy meadows, lakes, and other picture perfect landscape, which is home of the islands famous white deer, and then of course there is also the islands only village - with some pretty half timbered houses, though tragically many of the old houses burned in a tragic fire in 1942. Watch out for the house numbers - which are not really house numbers but old symbols.

The locals jokingly refer to a local driving rule which dictates that you are not allowed to use seatbelts on the island, since if you do, in all likelihood you are driving to way too fast - so leave the car in Svendborg, and jump on the local taxi instead - a tractor with a wagon for passengers going between the harbour and islands accommodations, or grab a bike, rental is conveniently available in the first house you see walking of the ferry.

• Drejø Kirke (Drejø Church), Kirkevejen 1. Built in 1535, this is likely the only Danish church built before Denmark's reformation, which has never had a Catholic priest - though it was built under tragic circumstances, when two baptist parties drowned when their boat capsized, en route to their church on another island. 
• Gl. Elmegaard, Hestmaevej 1, ☏ +45 23 62 71 17. Jun-Aug: daily 12:30-18:00. The oldest farmhouse on the island dating back to at least 1535, there is a small museum, a café and a small store in the building. 

Ferry from Faaborg (also docks on Lyø), 30 or 70 minutes, 5-8 times daily, 80 kr
Marina: 55º 02,4' N 10º 15,1' E; VHF: none ; 55 berths; Depth: 2.5 m; Speed: 3 knots.

Avernakø is, at 6 km², one of the larger ones in the island sea, with around a 100 people living on the island. It used to be two islands, Avarnak and Korshage, but they were joined together by a dam in the 1940s, after one too many had drowned crossing the shallow water in bad weather. The island is unusually hilly compared to the other islands, with cliffs up to 18 m facing the coast, which while mostly rocky, still invites for a swim in a few places - mostly on the northern coast. For good wide views over the entire archipelago, hike over Bjergs Banke near the islands wind-turbine.

The two villages Munke and Avernak are protected for preservation, and makes for some good photo's in the right spots. The ferry harbour and one of two marinas, are a few hundred meters northwest Avernak, and it is possible to rent bikes here, to the east is Korshavn, a small fishing hamlet - with no fishermen, but the other small marina. South of Munke and Avernak you'll find the remains of 3 dolmens (Viking burial mounds), you can also trace down Høje Stene which used to be even more impressive, but are now essentially a pile of rocks.

• Avernakø Kirke (Avernakø Church), Hovedvejen 19. The local church is more than 350 years old, but has been altered several times, not until 1876 did it get its current bell-tower. In 1685 local farmers discovered bronze age 6 gold pans, now on display in the national museum in Copenhagen, but replicas are stored inside the church. 

Ferry from Faaborg, 17 minutes, 6-10 times daily^{[dead link]}, 52 kr
Marina: 55º 04,1' N 10º 15,2' E; VHF: none ; Single pier at 30 kr; Depth: 2 m; Speed: no limits

Bjørnø is 1.5 km² and the island nearest Funen which has worked to its advantage, and the depopulation of 60-person community has been kept at bay. The terrain is undulating, with the highest point, Højbjerg towering 24 meters above the sea - it is vigilantly guarded by a rather large bull and its cows - so watch out. To the south-west you'll find tall erosion cliffs, home of a large colony of Sand Martins which nests in holes in the cliffs, and beautiful views of Funen and the neighbouring islands. On the opposite side the island flattens, and in the north west you'll find a salt marsh with a rich bird life. The beaches around the island are narrow and rocky, but popular with fossil hunters. Water Voles are known to undermine the roads, so be vigilant if you bike around the island, which is the only alternative to walking, since the ferry does not take cars.

The small village in the centre of the island, is probably the islands greatest attraction. Unlike the rest of the country, Bjørnø did not experience the parcellation, where farms were moved from villages out in the fields during the 18th century agricultural reforms, so many pretty white half timbered houses, many with thatched roofs, still stand along the villages two streets just as they were hundreds of years ago, its all really idyllic on a summers day. North of the village stands a lone defunct canon, possibly a hint to the islands popular smuggling activities in the old days. There is no shopping on the island, other than a small summer-only kiosk selling ice cream and other sundries.

Ferry from Faaborg (also docks on Avernakø), 45 or 70 minutes, 5-8 times daily, 80 kr
Marina: 55º 03,1' N 10º 09,6' E; VHF: ; 80 berths; Depth: 2.5 m; Speed: no limits

Lyø, is fairly large at 6 km². Today around 160 people live on the island, but during the 16th century the whole population was eradicated by pillaging and epidemics. It was resettled by 24 families the local squire had been kind enough to give the choice; "Lyø or your head?" To add to the history, most of the nation's school children have heard of the capture of King Valdemar the Victorious for ransom, which happened on this island. Adding to the sense of history are the many burial mounds dotted around the island, most famous is Klokkestenen.

The landscape is varied with two lush valleys, separated by a 24-m-high ridge, cheekily called 'The Mountain' (Bjerget), but it does offer some great views, save a small forest to the east, most of the island is dominated by lush farmland. The coast is mainly rocky, with low cliffs on some parts, but to the east there are some good bathing spots around what called Revet and Det Ny Land to the east, you can walk around the island along the coast in 5–7 hours.

On the middle of the island you find the lone village, it's incredibly well preserved and have several protected buildings, many dating to the 18th century and a few even earlier. It's mainly made up of old half-timbered houses build up around a few village ponds and criss-crossed by small alleyways and broken up by some huge beautiful old trees. There is also a fine church, and a nice old 4 winged vicarage, one of the finest buildings on the island. To get here there is a bike rental at the harbour (+45 62 61 73 80) or you can event rent a horse (+45 62 61 96 10).

• Lyø Kirke (Church), Lyø Bygade 3. The village church dates back to the reformation, and is build of massive fieldstones. The circular cemetery is unique in the country, and quite beautiful. 
• Klokkestenen (The Bell Stone), Vestensvej (off the road, hidden away by big trees). A dolmen chamber in a grove up on a high hill dating to 3500–3100 BC, It takes its name from the fact that if you hit the upper stone in the right places you will hear a bell-like sound - and according to legend, your wish will come true. 
• Lyø Søfatsmuseum, Kærlighedsstien 1, ☏ +45 20 63 18 83. Daily 10:00-17:00 from June 15th-August 15th, otherwise by appointment. Odd collection of items brought home by seafarers on the island, initiated by an old sailor and his wife. At just 20 m², it's rather small, but still packed with all sorts of small things from all over the world. The owners are happy to show people around in Danish, German or English. 20 kr. 
• Elmekilden, Smedegyden 8. A well-kept half-timbered farm house from 1873, well-preserved clog-shop to boot. The building is inhabited though, so don't waltz in unannounced.