Teredos, which start life looking like tiny clams, grow up to be worms “as big around as your thumb, and nearly four feet long, with little triangular teeth,” says commercial diver Lenny Speregen. Like underwater termites, they devour wood. And Limnoria tripunctata, a.k.a. “gribbles,” are bugs about the size of a pencil dot that look like tiny armadillos, and eat not only wood but also concrete. Speregen says he’s seen fifteen-inch-diameter columns that have been gnawed down, hourglass style, to three inches.
Posted on: 2009 May 13
