Through Sept. 26: Opening of Chesapeake Changes, a natural history exhibit that focuses on the geology, geography, wildlife and human settlement in the 64,000 square-mile watershed of the bay, Explorers Hall of the National Geographic Society, 17th and M Streets NW, Washington, D.C.
Today: Havre de Grace Decoy Festival, Havre de Grace Middle School and High School. Show opens at 6 p.m. Friday and at 10 a.m. Saturday and Sunday. Admission is $5 daily or $8 for three-day pass. Children under 12 will be admitted free. Call (410) 939-3739.
Aug. 11-14: International Federation of Fly Fishers Fly Fishing Show, Livingston, Mont. Call (310) 597-5942. Call Gwenn Hensler at (406) 293-4094.
Saturday-Sunday: Maryland Saltwater Sportfishermen's Association bluefish tournament in Maryland waters of the Chesapeake Bay. Call (410) 768-8666.
May 21-22: Maryland B.A.S.S. Federation S.Q.T. event on Potomac River.
May 26: Monthly meeting of the Maryland Fly Anglers, Ridge Garden Apartments clubhouse, Old Harford Road and Putty Hill Avenue, 7:30 p.m. Jimmy Marks will speak on bass bug innovations. The public is welcome. Call (410) 825-2695.
June 20: Maryland B.A.S.S. Federation Tournament Trail event at Deep Creek Lake.
July 11: Maryland B.A.S.S. Federation Tournament Trail event on Upper Bay tributaries.
July 15-18: Ocean City Tuna Tournament, Ocean City Fishing Center. Call (410) 213-1121 or (800) 322-3065.
Aug. 1: Maryland B.A.S.S. Federation Father/Son, Adult/Youth event on Potomac River.
BTC Aug. 15: Maryland B.A.S.S. Federation Tournament Trail event on Potomac River.
Aug. 22: Maryland B.A.S.S. Federation Jr. Mr. Bass event on Potomac River.
Sept. 12: Maryland B.A.S.S. Federation Tournament Trail event at Deep Creek Lake.
Saturday: Sportsmen's banquet sponsored by Maryland Quail Unlimited and the Ruffed Grouse Society, Colony South Hotel, Clinton. Cash bar, dinner, auctions, raffles, door prizes.
Aug. 25 and 28: Hunter safety education course at the Howard County Fairgrounds. Wednesday, 7 to 10 p.m., Saturday, 8 a.m. to 3 p.m. Pre-registration required, $2 fee and limit of 60 students. Call (410) 549-4963.
May 20-23: Santa Maria Cup, women's match racing championship, Baltimore, Inner Harbor.
May 28: Start of the Chesapeake Lighthouse Challenge for PHRF A1, A2, B, C, N and multihull classes. Entries due no later than May 21. Write Race Committee, Cape Saint Claire Yacht Club, 1223 Riverbay Road, Annapolis, Md. 21401.
June 11: Sail for Sight Regatta sponsored by the Baltimore City Yacht Association, HarborView() Marina and Yacht Club, 4 p.m. The Sail for Sight Regatta raises funds for retinitis pigmentosa research, treatment and cure. The regatta also will include a race for blind and visually impaired youths. Funds are raised through pledges from entered boats. Call (800) 683-5555.
June 12: Start of the Annapolis-to-Newport Race. IMS, PHRF and PHRF non-spinnaker classes and one-design classes with sufficient entries (minimum length in all classes, 33 feet; category 2 event). Entries close May 25. Call Gaither Scott, Chip Thayer or Ron Ward at (410) 263-9279.
(Items may be mailed to Outdoors Editor, The Baltimore Sun, 501 N. Calvert St., Baltimore, Md. 21278-0001. Please include time, date and location of events to be listed, as well as a short description of planned activities and a telephone number, including area code for more information. Outdoors Journal is published each Thursday and Sunday. Please mail listings four weeks before the event.)