National Aquarium in Baltimore

The "Guest Diver Program" at The National Aquarium in Baltimore consists of two 30-minute dives in the aquarium's most popular exhibits, the Atlantic Coral Reef and Wings in the Water. Guests attend a predive program in which they learn the basics of diving in such an unusual environment. They also learn the role divers can play in reef conservation and how to be a good steward of natural resources. A C-card is required, and divers must be at least 18 years of age.

Depths to: 13 feet (4 m) in the Atlantic Coral Reef and nine feet (2.7 m) in Wings in the Water.
Aquatic life: Rays, sharks and more than 50 species of fishes.

Fees: $295 per person for two 30-minute dives. Tickets must be purchased in advance.
Local amenities: Dining, lodging and other amenities are plentiful in the downtown Baltimore area.
More info: Call (301) 519-9283 or visit www.aqua.org.

Open: Year-round except Thanksgiving and Christmas. Hours vary by season so it's best to call ahead.

Getting there: From New York City, take Interstate 95 south to Baltimore and go through the right tube of the Fort McHenry Tunnel. Once through the tunnel, stay in the right lane and take Exit 53, marked Downtown I-395. On I-395, stay in the center lane until you come to Pratt Street. Oriole Park at Camden Yards will be on your left. Turn right on Pratt Street. The Inner Harbor will be to your right. The aquarium is eight blocks on the right.