When a tree falls in a forest, regardless of whether anyone hears it, it sometimes becomes clam food. Wood that finds its way from rivers into the ocean can eventually become waterlogged and sink to the sea floor, sometimes to great depths. There, tiny clams bore into the wood, eating the wood shavings and living the rest of their lives head down in the holes they made. In a new paper in the Journal of Molluscan Studies, researchers have updated the deep-sea wood-boring clam family tree with three new genus groups and one new species. And, it turns out, once removed from their boreholes, the clams are pretty PG-13-looking.