Even landlocked folks can mark the start of Northern California's sailing season at Opening Day on the Bay. The annual event features hundreds of beautifully bedecked craft from Northern California yacht clubs in a procession from the Golden Gate Bridge to Pier 39. Because this year's theme is "Movies by the Bay," the lavish sailing pageant should showcase an array of tall ships, classic yachts, and homemade dinghies in celluloid drag. While official judges present awards, spectators -- even nonboating ones -- can cast their own "votes" from the rocks along the Marina waterfront (remember: "Yar" is a nice compliment to give a boat). The parade begins at noon; watch out for it from Pier 39, Beach & Embarcadero, S.F. Spectating is free; call 383-5632 or visit www.picya.org.
-- Josh Rotter
Pick It Up
It's that time again: time to get environmental. Hot-stuff activist group the Surfrider Foundation joins up with the Coral Reef Alliance for Dive In to Earth Day, a worldwide effort to get you and your nature-boy and -girl friends interested in protecting your local aquatic environment. At the groups' "Earth Day Beach Clean Up," ocean lovers can hear a short educational talk, pick up garbage for a while, and enter a raffle to win a bunch of nifty prizes. Love your Mother (Earth, that is) at 1 p.m. at Ocean Beach, Great Highway & Fulton, S.F. Participation is free; visit www.coral.org.
-- Hiya Swanhuyser
It's not easy being green
In the urban jungle, sometimes the only plant life we come across are the weeds that sprout through the sidewalk's cracks. But on a few Mission District byways, green-minded residents have installed planters full of flowers along desolate stretches of concrete. See the best of these urban landscaping projects on the "Green Streets of the Mission Tour." The two-hour stroll's focal point is the Shotwell Greenway, an alley where 40 percent of the concrete has been replaced with drought-resistant plants. The excursion also includes suggestions on how apartment dwellers can transform their own patches of footpath into plant-filled paradises. The green day begins at 11 a.m. at Dolores Park, 18th & Dolores streets, S.F. Participation is free; visit www.walksf.org.
-- Jane Tunks