Cape May Marine, 1263 Lafayette St, 609-884-0262. Looking for sailing or skiing? A word of caution for skiers: New state regulations governing jet skis, including speed limits and a limit to the time you can be on the water, are in place this year and the marine police will enforce them. Check out the new rules at the marina before you rent. Contact the following for sailing or skiing: BAYVIEW SAILBOATS 312 Bay Ave., Ocean City, 609-398-3049. Sunfish, Hobie Cats, windsurfers, day sailers and lessons. PIER 88 MARINA 88th Street and the bay, Sea Isle City, 609-263-8811. SPEED AND SKI 916 Palen Ave, next to the 9th Street Bridge, Ocean City, 609-398-0424. Thirteen- to 18-foot boats available for skiing or cruising. JET SKI RENTALS 2d Street and Bay Avenue, Ocean City, 609-399-4017, also at 312 Bay Avenue, Ocean City, 609-398-3049, and at Mad Beach, at the base of the Beesleys Point Bridge, 609-390-1771. GETTING AROUND The first word that comes to mind about mobility down the shore is hassle. And it is, if you're sitting in something with four wheels. Instead, ride a bike. Consider the attraction: It's so easy a child can do it. It's relatively inexpensive. It's good for you. It requires no non-renewable energy sources. It doesn't degrade the environment. And you can park it virtually anywhere. The resort boardwalks are the most popular tracks, and usually restricted to early morning rides. Tooling around the streets is admittedly tricky, but biking is still better than trying to drive. And if enough people take to two- wheeling, maybe the resorts will set aside bicycle paths. In an effort to promote bicycling, New Jersey publishes a guidebook that includes information on bike clubs and organizations, county maps, commuting tips and short and long-distance tours. To get one, write to William Feldman, Pedestrian/Bicycle Advocate, New Jersey Department of Transportation, 1035 Parkway Ave., Trenton, N.J. 08625. If you own a bicycle, take it along. If you don't, you can rent one. OCEAN CITY Bob's Grill, 1368 Boardwalk, 609-399-3438; Ocean City Bicycle Center, 8th Street and Atlantic Avenue, 609-399-5550; 13th Street Bikes, 13th Street and the Boardwalk, 609-399-7121; 34th Street Bikes, 34th Street and West Avenue, 609-398-6431. STONE HARBOR Harbor Bike and Beach Shop, 9828 3d Ave, 609-368-3691. CAPE MAY Buckingham Bikes, 1111 Beach Dr, 609-884-3760; La Mer Bicycle Rentals, Pittsburgh Avenue, 609-884-9000; Village Bicycle Shop, Victorian Village Plaza, 609-884-8500. A SHORE FAVORITE It is known to scientists as Callinectes sapidus, the Latin name for the beautiful (calli) swimmer (nectes) that is savory (sapidus). A fitting name for the New Jersey blue crab. The pursuit of this feisty crustacean is a tradition enjoyed by old and young alike. One of the more common methods is to use a box or star (triangular) trap,