undaria

4:40pm

Thu November 8, 2012
Ecology

San Francisco’s volunteer seaweed fighters

Undaria laid out across the dock at the San Francisco Marina.
Marianne Kavanagh

Carliane Johnson is about to dive into a narrow channel of water, just about five or six feet between the dock and the seawall. She won’t have to dive deep to find what she’s looking for.

“The population can explode all of a sudden, and we’ll be pulling a lot,” she says. “Some can be six or seven feet long. It’s a lot of plant material, and I just bring it to the docks, someone grabs it, and I go back and look for more.”

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