Spartinaxx114_ls.JPG From left: Tyrone James, of Oakland; Marcel Mixon, 20 of Oakland; Damon Hartley, 18 of Oakland; Kayla Bell, 18 of Berkeley and David Curiel, 20 of Oakland. The crew from the The East Bay Conservation Corp looks over the si

spartinaxx114_ls.JPG From left: Tyrone James, of Oakland; Marcel Mixon, 20 of Oakland; Damon Hartley, 18 of Oakland; Kayla Bell, 18 of Berkeley and David Curiel, 20 of Oakland. The crew from the The East Bay Conservation Corp looks over the site where they are removing spartina alterniflora deciding where they next place they will work will be. The crew works on removing a fast-growing marsh grass, spartina alterniflora on 7/14/03 in Alameda. A fast growing marsh grass cropping up on the shores of San Francisco Bay looms as one of the nastiest invaders ever to hit the tidelands, enviornmentalists say. One environmental group, the Coastal Conservancy, says the grass, called spartina alterniflora, is building toward a growth explosion that threatens to choke much of the bay unless land owners join hands to stop it. The city of Alameda is trying to root out a small infestation before it gets out of hand. LEA SUZUKI / The Chronicle (Photo By LEA SUZUKI/The San Francisco Chronicle via Getty Images)