A mysterious plume, possibly a stream of ice-covered methane bubbles (inset arrow), rises about 1.4 kilometers from the seafloor off the coast of California. The plume originates in a previously unknown, amphitheater-shaped scar (main image, arrow) on the ocean bottom about 32 kilometers northwest of California’s Cape Mendocino. A recent oceanographic survey on the NOAA . . . → Read More: The Creation of a New Deep-Sea Feature