Acadia Air Tours. This outfit provides sightseeing flights over Bar Harbor and Acadia National Park. Most tours run from 15 minutes to an hour and range from $150 to $450 for two people. The sunset tour is $50 extra. 968 Bar Harbor Rd., Trenton, ME, 04605. 207/667–7627. www.acadiaairtours.com.
Acadia Bike. With mountain bikes and hybrids, Acadia Bike rents models that are good for negotiating the carriage roads in Acadia National Park. 48 Cottage St., Bar Harbor, ME, 04609. 207/288–9605 or 800/526–8615. www.acadiabike.com.
Bar Harbor Bicycle Shop. Rent bikes by the half or full day at the Bar Harbor Bicycle Shop. 141 Cottage St., Bar Harbor, ME, 04609. 207/288–3886 or 800/824–2453. www.barharborbike.com.
Coastal Kayaking Tours. This outfitter has been leading trips in the scenic waters off Mount Desert Island since 1982. Rentals are provided through its sister business, Acadia Outfitters, on the same downtown street. Trips are limited to no more than 12 people. The season is May through October. 48 Cottage St., Bar Harbor, ME. 207/288–9605 or 800/526–8615. www.acadiafun.com.
Downeast Sailing Adventures. Take two-hour and sunset cruises for $35 with six passengers or $50 with fewer. Departures are from Upper Town Dock in Southwest Harbor and several other locations. Upper Town Dock, Clark Point Rd., Southwest Harbor, ME, 04679. 207/288–2216. www.downeastsail.com.
Margaret Todd. The 151-foot four-masted schooner Margaret Todd operates 1½- to 2-hour trips three times a day among the islands of Frenchman's Bay The sunset sail has live music, and the 2 pm trip is narrated by an Acadia National Park ranger. Trips are $37.50 and depart from from mid-May to October. Bar Harbor Inn pier, Newport Dr., Bar Harbor, ME, 04609. 207/288–4585. www.downeastwindjammer.com.
Bar Harbor Whale Watch Co.. This company has four boats, one of them a 140-foot jet-propelled double-hulled catamaran with spacious decks. It's one of two large catamarans used for whale-watching trips, some of which go at sunset or include a side trip to see puffins. The company also offers lighthouse, lobstering, and seal-watching cruises, and a trip to Acadia National Park's Baker Island. 1 West St., Bar Harbor, ME, 04609. 207/288–2386 or 800/942–5374. www.barharborwhales.com.